Streaming devices / Compare

Roku Express 4K+ vs Xiaomi TV Box S (2nd Gen)

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Product A: Roku

Express 4K+

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B

Product B: Xiaomi

TV Box S (2nd Gen)

60 of 97 known

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Only differences

ARoku Express 4K+

BXiaomi TV Box S (2nd Gen)

General

5 of 8 differ

Series

Express1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026The live roku.com page for this URL now shows another product, so the maker page was read from the Internet Archive capture of 2022-10-10. Product details, model 3941R.

Not available

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

3941R, 3941R21Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Model row 3941R. 3941R2 is the same Express 4K+ device according to Roku's answer on the Best Buy product Q&A page.16Retailer pagebestbuy.com/site/questions/roku-express-4k--streaming-player-hd-4k-hdr-with-roku-voice-remote-with-tv-controls-includes-premium-hdmi-cable-black/6449512/question/f1b4d262-9e14-37b8-b599-10e45fb527a2Read 11 October 2026Best Buy product Q&A, Roku Team answer: both the 3941R and 3941R2 are the same Roku Express 4K+ device. The Roku developer table lists 3941X and 3941X2 as the software model names.

MDZ-28-AA, PFJ4151EU7Retailer pagepood.datafox.ee/audio-ja-video/tv-tarvikud/xiaomi-tv-box-s-2nd-gen-multimedia-playerRead 15 October 2026Estonian retailer lists the EU product code PFJ4151EU. eBay listings pair the same EAN with MPN MDZ-28-AA.

GTIN / EAN

Not available

69714081570447Retailer pagepood.datafox.ee/audio-ja-video/tv-tarvikud/xiaomi-tv-box-s-2nd-gen-multimedia-playerRead 15 October 2026EAN 6971408157044 for PFJ4151EU, black, 2 GB and 8 GB.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

13 April 202112Press articletechcrunch.com/2021/04/13/roku-launches-a-rechargeable-hands-free-voice-remote-and-other-devices-rolls-out-roku-os-10Read 11 October 2026Article dated 2021-04-13 announces the Roku Express 4K+.

19 April 20233Press articlemezha.ua/en/2023/04/19/xiaomi-introduced-the-tv-box-s-media-player-of-the-second-generationRead 15 October 2026Press report dated 19 April 2023 that Xiaomi introduced the box. The maker published no dated launch post that was found.

Status

Discontinued3Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 11 October 2026Express 4K+ rows (3941X Marlin, 3941X2 Bailey) sit in the Updatable list. Roku says it no longer manufactures these products. Retailers may still hold stock.

Available5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Test of 25 July 2023 with a price list updated 13 September 2026 that still shows shops selling the box.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Roku Streaming Stick Plus (2025)17Maker product pageroku.com/blog/players-25Read 23 October 2026Roku says the Roku Streaming Stick Plus replaces the Roku Express 4K+ at the same price.

Xiaomi TV Box S (3rd Gen)12Reviewnotebookcheck.net/New-Xiaomi-TV-Box-S-3rd-Gen-with-more-powerful-processor-revealed.986381.0.htmlRead 23 October 2026Notebookcheck says the Xiaomi TV Box S (3rd Gen) follows the TV Box S (2nd Gen) and calls the 2nd Gen its predecessor.

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$39.9912Press articletechcrunch.com/2021/04/13/roku-launches-a-rechargeable-hands-free-voice-remote-and-other-devices-rolls-out-roku-os-10Read 11 October 2026Express 4K+ at $39.99 in the US. Price excludes sales tax.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026The page is the Roku US site and the model row is the US retail model 3941R. The maker's launch material and the TechCrunch launch report give US availability.

DE, ES, EE, LV, PL7Retailer pagepood.datafox.ee/audio-ja-video/tv-tarvikud/xiaomi-tv-box-s-2nd-gen-multimedia-playerRead 15 October 2026Sold in Estonia with the EU code. The maker has a German spec tab, Xataka reports Spanish sales, LMT lists it in Latvia and x-kom in Poland.8Press articlexatakahome.com/centro-multimedia/xiaomi-tv-box-s-2nd-gen-caracteristicas-precio-ficha-tecnicaRead 15 October 202616 May 2023 report that the box is on sale in Spain through Amazon.

ColoursiThe maker's own colour names

Black13Retailer pagequill.com/roku-express-4k-plus-black-3941r/cbs/55407410.htmlRead 11 October 2026Retailer listing for the Roku Express 4K Plus 3941R, colour Black.

Black1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026

Form factoriA stick plugs straight into the HDMI port. A dongle hangs from its own short fixed HDMI lead. A box stands on its own and connects by a separate cable.

Box1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026The maker's product image and the quick start guide show a small separate player that connects to the TV with an HDMI cable. It is not a stick or dongle.

Box2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Maker sells it as a TV Box with a separate HDMI cable and a separate power adapter.

Video output

4 of 11 differ

Max output resolutioniHighest published video output resolution. Decoder capability and app streaming quality do not establish the output resolution.

3840 × 2160px1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Tech specs, TV Compatibility: 4K TVs up to 2160p at 60fps (3840 x 2160), needs an HDMI input that supports HDCP 2.2.

3840 × 2160px1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab states Output Resolution 4K (3840 x 2160).

Max output refresh rateiHighest published output refresh rate. Resolution, HDR and connection conditions belong in the source note. This is not a television panel refresh rate.

60Hz1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Tech specs, TV Compatibility: up to 2160p at 60fps. HDR and chroma conditions are not stated.

60Hz7Retailer pagepood.datafox.ee/audio-ja-video/tv-tarvikud/xiaomi-tv-box-s-2nd-gen-multimedia-playerRead 15 October 2026Retailer spec: display output 3840 x 2160 pixels at 60 fps. The maker states the 60 FPS only for the video decoder. Mezha says the HDMI bandwidth limits output to 4K at 60 Hz.

Video output modesiPublished video output combinations. A row records support, not a proved maximum at every lower resolution. Keep HDR, chroma and bit depth conditions in source notes.

ARoku Express 4K+

Width (px)	Height (px)	Refresh rate (Hz)
3840	2160	60

Source1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026One row from the 4K TVs line. HDR, bit depth and chroma are not stated for this row. The HD TVs line states up to 1080p without a rate, so no 1080p row is stored.

BXiaomi TV Box S (2nd Gen)

Width (px)	Height (px)	Refresh rate (Hz)
3840	2160	60

Source7Retailer pagepood.datafox.ee/audio-ja-video/tv-tarvikud/xiaomi-tv-box-s-2nd-gen-multimedia-playerRead 15 October 2026Single 4K 60 Hz row from the retailer spec. Bit depth, chroma and HDR pairing are not published.

HDR formats

HDR10, HDR10+, HLG1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Tech specs, 4K HDR TVs: supports HDR10/10+ and HLG. No Dolby Vision is listed.

HDR10, HDR10+, Dolby Vision1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab states Dolby Vision and HDR10+. HDR10 is added from the reviews listed below.3Press articlemezha.ua/en/2023/04/19/xiaomi-introduced-the-tv-box-s-media-player-of-the-second-generationRead 15 October 2026Reports HDR10, HDR10+ and Dolby Vision.4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review lists Dolby Vision, HDR10+ and HDR10 under color and HDR and in its certification line.

Dolby Vision profilesiPublished supported Dolby Vision profiles and levels. Streaming support does not prove local-file support.

Not available

Not available

HDMI versioniPublished HDMI output revision. A revision does not establish every optional HDMI feature.

2.0b10Reviewtechradar.com/reviews/roku-express-4k-2021Read 11 October 2026Review of the Express 4K+ states 4K HDR streaming at up to 60 frames per second over HDMI 2.0b. No maker page states the HDMI revision.

2.11Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Socket table lists HDMI 2.1 with a count of 1. Mezha and ProfesionalReview say the real bandwidth matches HDMI 2.0. The maker value is kept and no optional HDMI 2.1 feature is implied.

HDCP version

2.21Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Tech specs footnote: requires a compatible TV with an HDMI input that supports HDCP 2.2. This is the stated protected-output chain version.

Not available

HDMI-CEC

Yes10Reviewtechradar.com/reviews/roku-express-4k-2021Read 11 October 2026Review of the Express 4K+: the remote's volume and power buttons control the TV over HDMI-CEC. Roku's support pages describe CEC settings for Roku players in general.

Yes4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review lists HDMI-CEC available and a setup assistant for TV volume and power keys.5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Review: HDMI-CEC is supported for TV basics.

Automatic frame rate matchingiCan switch the video output rate to match content. App, operating system and playback restrictions belong in the source note.

Not available

Not available

Dynamic range matchingiCan switch the output dynamic range to match SDR or HDR content. App and firmware restrictions belong in the source note.

Not available

Not available

UpscalingiNamed video upscaling modes. Record source resolution and output restrictions in source notes.

720p to 1080p, 720p and 1080p to 4K1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026HD TVs: up to 1080p with up-scaling from 720p. 4K TVs: up to 2160p with upscaling from 720p and 1080p.

Not available

Video decoding

3 of 4 differ

Video codecsiExplicitly supported video decoding formats. Use names such as H.264, HEVC, AV1 and VP9. Chip capabilities alone do not prove device playback support.

H.264, HEVC8Owner's manualsupport.roku.com/article/share-media-over-usb-or-networkRead 11 October 2026Roku Media Player lists H.264/AVC and 4K H.265/HEVC. VP9 and AV1 are stated only for some Roku devices, so they are not stored. This player has no USB port, so the network media-server route applies.

HEVC, VP9, H.264, AV13Press articlemezha.ua/en/2023/04/19/xiaomi-introduced-the-tv-box-s-media-player-of-the-second-generationRead 15 October 2026Reports 4K playback in AV1, VP9 and HEVC.4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Hardware playback tests list H.264, H.265 and VP9 as OK. AV1 4K at 24 fps 10-bit plays only in streaming apps such as YouTube and the internal player. The review text also claims native 4K60 HDR support for AV1, which the test table does not show.

Video decode limitsiPublished supported decoding limits. Profiles, levels and playback route matter. Output resolution and service support are separate.

ARoku Express 4K+

Not available

BXiaomi TV Box S (2nd Gen)

Codec	Profile	Width (px)	Height (px)	Max frame rate (fps)	Bit depth (bits)
HEVC	Main 10	3840	2160	60	10
VP9	Profile 2	3840	2160	60	10

Source4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review playback tests: H.265 4K 60 fps 10-bit HDR OK, VP9 Profile 2 4K 60 fps 10-bit HDR OK. These are test results that match the maker's up to 4K 60 FPS claim, not a proved ceiling. The 8K VP9 row and the AV1 rows are not stored.

Video containersiExplicitly supported local playback containers. App requirements belong in the source note.

MKV, MP4, MOV8Owner's manualsupport.roku.com/article/share-media-over-usb-or-networkRead 11 October 2026AVC and HEVC in MKV, MP4 and MOV. Network media-server route. App, firmware and file capabilities apply.

Not available

DRM systemsiNamed supported DRM systems and security levels. DRM certification does not prove a particular service streams at 4K.

Widevine L1, PlayReady9Maker product pagedeveloper.roku.com/dev/docs/content-protectionRead 11 October 2026Widevine security-level table lists Marlin and Bailey, the Express 4K+ code names, under L1 Players. The page documents PlayReady for Roku OS and lists no exclusion for these code names. App DRM libraries and valid licenses are required.

Widevine L1, PlayReady4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review DRM line: Google Widevine L1 and PlayReady.6Spec databaseandroidtv-guide.comRead 15 October 2026Database lists Widevine L1.

Audio

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Audio formatsiPublished supported audio formats. Decoder, output and passthrough roles are qualified in source notes.

Digital stereo, DTS Digital Surround, Dolby-encoded audio, MP3, FLAC, PCM, ALAC, Vorbis, AAC1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Maker lines: digital stereo over HDMI, DTS Digital Surround pass through over HDMI, pass-through of Dolby-encoded audio over HDMI. MP3, FLAC, PCM, ALAC, Vorbis and AAC come from the Roku Media Player page and apply to the network media-server route.

Dolby Audio, Dolby Atmos, DTS-HD1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab states Supports Dolby Audio and DTS-HD. Decoding and passthrough roles are not separated by the maker.2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026

Audio passthrough formatsiCompressed formats explicitly passed to external audio equipment without decoding. Dolby Atmos support alone does not establish TrueHD passthrough.

DTS Digital Surround, Dolby-encoded audio1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Literal maker lines. Dolby codecs stay generic because the page does not name Dolby Digital, Dolby Digital Plus or Atmos.

Not available

Dolby AtmosiExplicit device support for Dolby Atmos. Codec, service, app and output requirements belong in the source note.

No11Reviewtomsguide.com/reviews/roku-express-4k-plusRead 11 October 2026Review of the Express 4K Plus: no Dolby Vision or Atmos audio. TechRadar and SlashGear agree.

Yes2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Overview page states Dolby Atmos and DTS-HD and the footnote requires streaming content and devices that support Dolby Atmos decoding. Content, app and HDMI audio path requirements apply.

Audio channel configurationsiPublished output configurations, such as 2.0, 5.1 or 7.1. Keep PCM and compressed audio routes separate in source notes. Dolby Atmos support alone does not establish a channel configuration.

2.01Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Digital stereo over HDMI. No numeric multichannel layout is stated.

2.0, 5.1, 7.14Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review audio settings: HDMI 7.1 and SPDIF 5.1 for Dolby and DTS bitstreams. SPDIF is not compatible with streaming apps. PCM is stereo only with downmix. Those routes give 2.0, 5.1 and 7.1.

Max audio sample rateiHighest published audio output sample rate. Keep playback route and format in source notes.

Not available

Not available

Max audio bit depthiHighest published audio output bit depth. Keep playback route and format in source notes.

Not available

Not available

Bluetooth audio output

No7Owner's manualsupport.roku.com/en-us/article/how-to-use-bluetooth-headphone-modeRead 11 October 2026Roku Express is listed as a device without Headphone Mode. The Express 4K+ is not in the compatible list. The article names 'Roku Express' without a generation, so Express 4K+ is read as part of that family. A Bluetooth radio version is not published.

Not available

Bluetooth audio codecsiExplicitly supported codecs for audio sent to Bluetooth headphones or speakers. Bluetooth version alone is not proof.

Not available

Not available

Processor and memory

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System on chip

Not available

Amlogic S905X44Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review names Amlogic S905X4 and the device code MiTV-AFKR0 jaws.5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Review names Amlogic S905X4.6Spec databaseandroidtv-guide.comRead 15 October 2026Database lists Amlogic S905X4 with code MDZ-28-AA / MiTV-AFKR0 / jaws.

CPU

ARM Cortex-A553Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 11 October 2026Express 4K+ rows: ARM Cortex A55. The core count is not stated for this model.

Quad-core Cortex-A551Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab states Quad-Core Cortex-A55 with no clock speed.

CPU cores

Not available

41Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026

Max CPU clockiHighest explicitly published processor clock for this device. Generic chipset limits are not device evidence.

Not available

2GHz4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review CPU performance row: Min 0.5 GHz, Working 1.2 GHz, Max 2 GHz on this device. The 2 GHz figure is a reviewer reading, not a maker claim.

GPU

Not available

ARM Mali-G31 MP21Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026

RAMiKeep published GB values as stated. Convert a source explicitly labelled MB using 1000 MB per GB and preserve its original figure and unit in the note. Do not assume MB means MiB. Convert explicit MiB or GiB to decimal GB through their byte definitions, recording the conversion in the note. This normalization does not establish an exact physical byte count.

1GB3Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 11 October 2026Express 4K+ rows: 1 GB.

2GB1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026

RAM type

Not available

Not available

StorageiMarketed built-in storage capacity in decimal GB. Free space after the operating system is separate.

Not available

8GB1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab lists 8GB ROM. The overview footnote says usable space is lower.

Storage type

Not available

eMMC4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review lists 8 GB eMMC with about 3.5 GB free.5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026

Expandable storageiCan use added removable or external storage to store installed apps or play media directly. Copying files through a USB data connection alone does not qualify. The source note states whether apps, media or both are supported and names the connection and limitations. Storage must be attached to the streaming device. Cloud and network streaming do not qualify.

Not available

Yes2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Ports section: insert a USB flash disk for local video playback. App installation on USB storage is not stated.4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review: expandable with a USB memory. Media use is stored. App installation on USB is not stated.

Storage expansion methodsiPublished methods for adding app or media storage. USB support alone does not prove app installation on external storage.

Not available

USB storage for media playback2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026USB flash disk for local video playback, as the maker states.4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026

Connectivity

3 of 7 differ

Wi-Fi

Wi-Fi 51Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Networking row: 802.11ac dual-band Wi-Fi (2.4 GHz / 5 GHz). 802.11ac is Wi-Fi 5.

Wi-Fi 54Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review states Wifi 5 and regrets that Wi-Fi 6 is missing. Smartzone and Taenk (802.11ac) agree. The maker names no generation.5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Review: Wi-Fi 5 only, no external antenna.9Reviewtaenk.dk/test/streaming-og-medieafspillere/xiaomi-tv-box-s-2nd-genRead 15 October 2026Public product data lists Wi-Fi 5 (802.11ac).

Wi-Fi bands

2.4 GHz, 5 GHz1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Networking row: 2.4 GHz / 5 GHz.

2.4 GHz, 5 GHz1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab states Wi-Fi 2.4GHz/5GHz. It names no Wi-Fi generation.

Wi-Fi MIMOiWritten as 2x2 MIMO when the maker gives the stream count, or MIMO when it does not. 2T2R counts as 2x2. MU-MIMO support alone does not show more than one stream, so it is not stored. Band wording goes in the source note.

Not available

2x2 MIMO11Reviewprofesionalreview.com/2023/08/09/xiaomi-tv-box-s-2nd-gen-review/ampRead 15 October 2026Spanish review spec list: Wi-Fi 5 dual band 2.4/5 GHz 2x2 with MIMO, throughput above 1 Gbps. The maker names no stream count. The same review gives HDMI 2.0a in its port list and HDMI 2.1 in its text, so it is not used for the HDMI version.

Built-in Ethernet speediRated speed of a built-in Ethernet port. An optional USB Ethernet adapter does not count.

Not available

Not available

Optional Ethernet adapter supportiExplicit support for an external Ethernet adapter. Required adapter and connection belong in the source note.

Yes1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Networking row: wired Ethernet requires a USB adaptor, sold separately. The setup article names the micro USB port. This is not a built-in Ethernet port.15Owner's manualsupport.roku.com/article/connect-to-a-wired-network-with-usbRead 11 October 2026Roku Express 4K+ (3941) is in the compatible device table. It needs a micro USB Ethernet adapter, 10/100 Mbps only, with an AX8877X or SMSC95XX chipset. The adapter is powered separately. This is not built-in Ethernet or storage expansion.

Yes2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Ports section: Support USB to ethernet adapter. The box has no built-in Ethernet port.

Bluetooth versioniPublished device Bluetooth version. The remote can use a different Bluetooth version.

Not available

5.21Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026

PortsiPhysical device connectors, including a fixed HDMI plug and power-only USB. Excludes connectors on the remote and optional adapters. Count identical connectors in each row.

ARoku Express 4K+

Connector	Count	Version	Role
HDMI	1	2.0b	Video and audio output
Micro USB	1	Not available	Power input and compatible optional Ethernet adapter connection

Source1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Ports row lists HDMI, Micro USB and a Reset button. The reset button is not a connector and is not stored. The micro USB role comes from the setup article. HDMI version comes from TechRadar.

BXiaomi TV Box S (2nd Gen)

Connector	Count	Version	Role
HDMI	1	2.1	Video and audio output
USB-A	1	USB 2.0	Media storage and peripherals
3.5 mm audio	1	Not available	Audio output
DC power	1	Not available	Power input

Source1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Socket table: HDMI 2.1 x1, USB 2.0 x1, power interface x1, audio output x1. The overview page calls the audio output a headphone jack for external speakers. Reviews say the jack also carries S/PDIF.9Reviewtaenk.dk/test/streaming-og-medieafspillere/xiaomi-tv-box-s-2nd-genRead 15 October 2026Public product data lists one HDMI 2.1 output, one USB 2.0 Type-A, no SD slot and a 3.5 mm audio output. The test results are behind a login and were not used.

Smart home

1 of 3 differ

Thread border router

Not available

Not available

Matter controlleriCan commission and control Matter accessories. Acting as a Matter accessory alone does not qualify.

Not available

Not available

Smart home platforms

Apple HomeKit, Google Home, Amazon Alexa1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Compatibility rows: works with Apple AirPlay and HomeKit, Google Home and Alexa. This does not establish Matter or Thread.

Not available

Remote control

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Remote model

Roku Voice Remote with TV controls1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Remote control row: voice remote with TV power, volume, and mute buttons. The name 'Roku Voice Remote with TV controls' follows the Roku Express 4K+ retail title.

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Remote connectioniEvery wireless link the included remote uses, to the device or to other equipment. An infrared transmitter that controls the TV counts as infrared.

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Bluetooth, Infrared2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Overview: 360 degree Bluetooth and IR remote control. The footnote says remote appearance and functions vary between markets.

Remote microphone

Yes1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Remote control row and the Voice button on the quick start guide diagram. Press-to-talk remote, not hands-free.

Yes2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 20264Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review: Bluetooth remote with a microphone for Google Assistant.

Remote voice assistantsiVoice assistants usable from the supplied remote. Region, language, app and firmware restrictions belong in the source note.

Roku Voice1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Voice remote row and the Roku Voice search button. Roku Voice is the only assistant on the supplied remote.

Google Assistant2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Press the Google Assistant button on the remote. Google Assistant is not available in every language and country.

Remote TV controliSupported TV controls, such as power, volume and input. Infrared and HDMI-CEC routes are qualified in source notes.

Power, Volume, Mute1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Remote TV power and volume buttons work with most TVs. Mute is the third button named in the Remote control row.

Power, Volume2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Built-in IR controls power and volume of the TV or soundbar.

Remote finder

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Remote backlight

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Remote poweriPublished batteries or rechargeable battery arrangement for the supplied remote.

2 AAA batteries2Owner's manualimage.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdfRead 11 October 2026What's included page: two pre-installed AAA batteries.

2 AAA batteries (not included)5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Remote needs 2 AAA batteries that are not included. China-Gadgets says the same.

Remote charging port

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Software

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Operating systemiPlatform name. The launch version is stored separately from later firmware support.

Roku OS3Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 11 October 2026Hardware table is the Roku OS developer reference. The player runs Roku OS.

Google TV (Android TV OS)1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Specs tab states Google TV.2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026

Operating system at launch

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Android TV OS 114Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review tested Google TV 11 (32-bit). Smartzone and China-Gadgets also report Android TV 11 at launch. Later firmware can differ.5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Test of 25 July 2023: Android TV 11 with the Google TV interface.

App store

Roku Streaming Store4Owner's manualsupport.roku.com/article/1500004688162Read 11 October 2026How to set up your Roku Express 4K+: add new apps from the Streaming Store. The same article lists the box contents and the micro USB port for a compatible Ethernet adapter.

Google Play4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Google Play for Google TV is installed.

Casting protocolsiPublished casting or screen mirroring protocols. AirPlay and Google Cast are distinct. App-only playback support does not prove system-wide mirroring.

Apple AirPlay 26Owner's manualsupport.roku.com/article/screen-mirror-your-apple-device-with-airplayRead 11 October 2026Roku Express 4K+ (3941) is in the table of devices that support Apple HomeKit and streaming with AirPlay 2 on Roku OS 9.4 or higher.

Google Cast2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Chromecast built-in requires Chromecast-enabled apps. AndroidPCtv reports no Miracast and no AirPlay.4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review media sharing line: Google Cast yes, Miracast no, AirPlay no.

Voice assistantsiVoice assistants supported by the device. A remote microphone and hands-free activation are separate features.

Roku Voice, Amazon Alexa, Google Assistant, Apple Siri1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Compatibility rows: works with Alexa, Google Home, and Apple AirPlay and HomeKit. Roku Voice runs from the supplied remote. Alexa, Google Assistant and Siri work through other devices. They do not run on the supplied remote.6Owner's manualsupport.roku.com/article/screen-mirror-your-apple-device-with-airplayRead 11 October 2026Apple HomeKit lets you use Siri and the Home app on an Apple device to control the player. Supported on Roku Express 4K+ (3941).

Google Assistant2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026Google Assistant, started from the remote button. The global page also says Ok Google, which is not taken as proof of hands-free control.

Hands-free voice controliControl the streaming device by voice without pressing a button. This may use built-in microphones or a compatible linked smart speaker, phone or headset. The source note names the required device, connection, software and supported commands. A microphone on a press-to-talk remote alone does not qualify.

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Mobile remote platforms

Android, iOS5Owner's manualsupport.roku.com/article/360063908513Read 11 October 2026Getting to know your Roku Express 4K or Express 4K+: the free Roku mobile app for iOS and Android controls the device by voice.

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Accessibility features

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Gaming

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Game servicesiPublished native or cloud gaming services. Service availability is time-sensitive. Record software and region requirements in source notes.

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GeForce NOW4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review says cloud gaming such as NVIDIA GeForce NOW works, or by installing its APK. Account and region requirements apply.

Game controller supportiExplicitly supported controllers or connection methods. Bluetooth alone does not establish game controller support.

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USB game controllers, Bluetooth game controllers4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review: compatible with Bluetooth or USB gamepads. Models are not named.

Power

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Power supply

USB2Owner's manualimage.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdfRead 11 October 2026Step 2 powers the player through the included USB power cable and power adaptor, or from a TV USB port. Power input is micro USB.

External DC adapter4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review lists a DC adapter (5.2 V) and a round power connector on the back. Smartzone says barrel connector. The adapter rating differs between reviews (2.1 A and 2 A), so no adapter output is stored.5Reviewsmartzone.de/testbericht-xiaomi-tv-box-s-2-genRead 15 October 2026Review: external power adapter with a barrel connector.

Rated power inputiDevice input rating, as published. An external adapter output rating is separate.

5 V, 1 A1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Power input row: 5V - 1A.

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Included adapter outputiRated output of the included power adapter. This is not device power consumption.

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Max power consumption (claimed)iMaker-published maximum device power consumption. Adapter rating is not proof.

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Standby power (claimed)iMaker-published device standby consumption under the source conditions.

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Measured

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Video playback power (measured)iReviewer-measured device consumption. Video format, app, resolution, power measurement point and equipment belong in source notes.

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Idle power (measured)iReviewer-measured device consumption when idle. Firmware, measurement point and conditions belong in source notes.

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3W4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review Consumption row reads Off 0.9W, Min 3W, Working 3.8W, Max 7W. Min is read as the lowest reading with the box on and idle. The review gives no method, meter, firmware or measurement point. The Working and Max values are not stored because their app and load are unstated.

Standby power (measured)iReviewer-measured device consumption in standby. Network state, firmware and measurement point belong in source notes.

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0.9W4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review Consumption row: Off 0.9W. Read as the standby reading, since the box has no hard power switch. Method, meter, firmware and network state are not published.

Boot time (measured)iReviewer-measured time from power-on to usable home screen. Cold boot and standby wake are different. Record timing method and firmware.

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Dimensions and weight

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DimensionsiDevice body without remote, cables or adapter. Width is left-to-right in normal use, height is bottom-to-top and depth is front-to-back. For a stick, include the fixed plug only when the source does. A stick's length from the plug to its end is depth and its thickness is height. A puck that lies flat has its thickness as height.

Width86.3Height20.8Depth39.3mm(3.4 × 0.8 × 1.5 in)1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Size row: height 0.8 in (20.8 mm), width 3.4 in (86.3 mm), depth 1.5 in (39.3 mm). Player only.

Width95.25Height16.7Depth95.25mm(3.8 × 0.7 × 3.8 in)1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Maker: length 95.25 mm, width 95.25 mm, thickness 16.7 mm. The box lies flat, so thickness is height. AndroidPCtv lists 95 x 95 x 19 mm and 85 g. The maker values win.

WeightiDevice only, without remote, cable or power adapter. Included fixed cable or plug conditions belong in source notes.

44.6g(1.6 oz)1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Weight row: 1.6 ounces (44.6 g). Player only, without remote, cable or adapter.

142g(5 oz)1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Maker 142 g. Taenk lists the same 142 g. AndroidPCtv lists 85 g, which is not used.9Reviewtaenk.dk/test/streaming-og-medieafspillere/xiaomi-tv-box-s-2nd-genRead 15 October 2026Public product data lists 142 g, the same as the maker.

Remote dimensionsiSupplied remote body. Height is its length along the buttons, width is across the buttons and depth is front-to-back.

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Remote weightiSupplied remote weight. State whether replaceable batteries are included.

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Certifications

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FCC ID

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2AIMR-MITVMDZ28AA6Spec databaseandroidtv-guide.comRead 15 October 2026The Certifications row links the FCC record 2AIMRMITVMDZ28AA, written here as 2AIMR-MITVMDZ28AA like the Xiaomi TV Stick 4K 1st gen entry. fccid.io blocks automated access, so the record itself was not opened. Treat it as unverified.

Other certifications

ENERGY STAR1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Page text states this Roku player is ENERGY STAR certified. No certificate number or listing was checked.

Google TV certified4Reviewandroidpctv.com/xiaomi-tv-box-s-2nd-gen-reviewRead 15 October 2026Review calls it a certified Google TV device and its audio and video certification line names Dolby Atmos, Dolby Vision and HDR10. Only the Google TV certification is stored. No certificate ID is published.

In the box

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In the box

Roku Express 4K+ streaming player, Voice remote with TV power, volume, and mute buttons, 2 pre-installed AAA batteries, USB power cable, Power adaptor, Premium High Speed HDMI cable, Removable adhesive strip for mounting (optional)1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026What's in the box list.

Xiaomi TV Box S (2nd Gen), Remote control, Power adapter, HDMI cable, User manual1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Packaging table: box, remote control, user manual, power adapter, HDMI cable. Remote batteries are not listed. Smartzone and China-Gadgets say the batteries are not included.

HDMI cable includediA separate HDMI cable supplied in the box. A fixed HDMI plug or captive lead does not count. A short HDMI extender supplied with a stick counts, and the source note says it is an extender.

Yes2Owner's manualimage.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdfRead 11 October 2026What's included page shows a separate Premium High Speed HDMI cable. Step 1 connects the player to the TV with the included cable.

Yes1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Packaging table lists one separate HDMI cable.

Links

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Product page

web.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plus1Maker product pageweb.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plusRead 11 October 2026Internet Archive capture of the maker's product page, because the live URL no longer shows this player.

www.mi.com/global/product/xiaomi-tv-box-s-2nd-gen2Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-genRead 15 October 2026

Spec sheet

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www.mi.com/global/product/xiaomi-tv-box-s-2nd-gen/specs1Maker product pagemi.com/global/product/xiaomi-tv-box-s-2nd-gen/specsRead 15 October 2026Global maker specs tab. The UK, DE and AE spec tabs carry identical values.

Manual

image.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdf2Owner's manualimage.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdfRead 11 October 2026US quick start guide for model 3941, linked from the maker's setup article.

www.manualslib.com/manual/3916304/Xiaomi-Mdz-28-Aa.html10Owner's manualmanualslib.com/manual/3916304/Xiaomi-Mdz-28-Aa.htmlRead 15 October 2026Ten-page Important product information booklet titled MDZ-28-AA, hosted on ManualsLib. Only the page title and table of contents were readable, so no value comes from it. Xiaomi publishes no separate user guide that was found.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year14Maker spec sheet (PDF)images.thdstatic.com/catalog/pdfImages/5b/5b125123-9613-4138-9e94-2095d9c4cb30.pdfRead 11 October 2026Roku Limited Warranty page 1: one year for Roku streaming players and included remotes bought by an end user in the United States.

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Both are also in the API. Back to all streaming devices.