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onn. 4K Pro Streaming Device (2026) vs Roku Express 4K+

A

Product A: onn.

4K Pro Streaming Device (2026)

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B

Product B: Roku

Express 4K+

52 of 97 known

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Only differences

Aonn. 4K Pro Streaming Device (2026)

BRoku Express 4K+

General

6 of 8 differ

Series

Not available

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.

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

JS620K42Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Single-page unfolded maker QSG labels JS620K4 and document 36017107WT_EN_251114. Body drawings match the 2026 oval unit. Retail model 36017107 is not inferred from the document code.

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.

GTIN / EAN

Not available

Not available

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

Not available

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+.

Status

Available1Maker product pagewalmart.com/ip/18382213962Read 8 October 2026Exact NEW 2026 listing. Current fulfillment context says out of stock. This is released lifecycle availability, not a stock promise.

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.

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

onn. 4K Pro Streaming Device (2024)13Press articleaftvnews.com/2026-onn-4k-pro-and-onn-4k-stick-benchmarks-the-pro-gets-a-much-needed-power-up-and-the-stick-holds-its-ownRead 23 October 2026AFTVnews calls the 2026 model the 2nd-gen onn 4K Pro and says it replaces the 1st-gen onn 4K Pro.

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.

Not available

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.

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

$59.987Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026June 20 review lists MSRP $59.98 for exact 2026 model. Earlier isolated purchaser paid $59.88, a transaction price rather than a conflicting MSRP.

$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.

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.

US, PR1Maker product pagewalmart.com/ip/18382213962Read 8 October 20262Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Cover explicitly excludes Google TV apps, content and features outside U.S. and Puerto Rico. Illustrative Canada setup screen does not override this restriction.

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.

ColoursiThe maker's own colour names

Black, Gray1Maker product pagewalmart.com/ip/18382213962Read 8 October 2026Maker names Black and Gray. Black 3 GB/32 GB model is the reference and photograph.

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.

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.

Box7Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026

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.

Video output

8 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 pagewalmart.com/ip/18382213962Read 8 October 2026Maker 4K Ultra UHD output claim. No chipset-derived 4K75 ceiling inherited.

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.

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.

Not available

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.

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.

Aonn. 4K Pro Streaming Device (2026)

Not available

BRoku 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.

HDR formats

HDR10, HDR10+, Dolby Vision8Press articleflatpanelshd.com/news.phpRead 8 October 2026May 6 exact new Pro report explicitly lists HDR10, HDR10+ and Dolby Vision. Not a 2024 Pro or Plus column.

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.

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.

Not available

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.

HDCP version

Not available

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.

HDMI-CEC

Not available

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.

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

Yes10Reviewblog.lon.tv/2026/05/10/new-onn-4k-pro-streaming-box-review-2026-versionRead 8 October 2026Own purchased 2026 unit switches frame rate in some apps, including Netflix. Disney Plus and Apple TV did not switch to 24p in this test. Firmware and television model are unreported. No universal app guarantee.

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.

Not available

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.

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.

AV1, VP9, H.264, HEVC9Spec databaseandroidtv-guide.com/streaming-gaming/onn-walmart-4k-pro-js620k4Read 8 October 2026Exact-device record explicitly lists AV1, VP9, H.264 and H.265. No codec profiles, levels, containers or chipset decoding ceilings inherited.

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.

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

Not available

Not available

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

Not available

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.

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

Widevine L19Spec databaseandroidtv-guide.com/streaming-gaming/onn-walmart-4k-pro-js620k4Read 8 October 2026Record specifies Widevine L1. DRM alone does not establish any service's streaming quality.

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.

Audio

5 of 8 differ

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

Dolby Atmos1Maker product pagewalmart.com/ip/18382213962Read 8 October 2026Dolby Atmos support needs compatible content, app and HDMI audio equipment. Carrier, lossless passthrough and channel ceiling are unproved.

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.

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

Not available

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.

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

Yes1Maker product pagewalmart.com/ip/18382213962Read 8 October 2026

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.

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.

Not available

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.

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

Not available

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.

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

9 of 11 differ

System on chip

Amlogic S905X5M8Press articleflatpanelshd.com/news.phpRead 8 October 20269Spec databaseandroidtv-guide.com/streaming-gaming/onn-walmart-4k-pro-js620k4Read 8 October 2026

Not available

CPU

Quad-core ARM Cortex-A553Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026Readable original 2026 manufacturer packaging photograph names quad-core Cortex-A55 and ARM G310 V2. No clock or RAM type appears here.

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.

CPU cores

43Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

Not available

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

2.5GHz9Spec databaseandroidtv-guide.com/streaming-gaming/onn-walmart-4k-pro-js620k4Read 8 October 2026Exact JS620K4 / DS9620 / jarvis2 V2 record specifies 2.5 GHz Cortex-A55. This is a device database claim, not a clock measurement.

Not available

GPU

ARM Mali-G310 V23Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

Not available

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.

3GB1Maker product pagewalmart.com/ip/18382213962Read 8 October 20263Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

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

RAM type

Not available

Not available

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

32GB1Maker product pagewalmart.com/ip/18382213962Read 8 October 20263Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

Not available

Storage type

Not available

Not available

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.

Yes1Maker product pagewalmart.com/ip/18382213962Read 8 October 2026Maker USB 2.0 port is expressly for media and storage. External media playback is recorded. App installation on USB storage is unproved.

Not available

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

USB storage for media playback1Maker product pagewalmart.com/ip/18382213962Read 8 October 2026

Not available

Connectivity

4 of 7 differ

Wi-Fi

Wi-Fi 61Maker product pagewalmart.com/ip/18382213962Read 8 October 20263Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

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 bands

2.4 GHz, 5 GHz3Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026Maker box states Wi-Fi 6, 2.4/5 GHz, 802.11ax. MIMO stream count is unproved.

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.

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

Not available

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

100Mbps7Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026Own exact-device review states Ethernet capped at 100 Mbps. Not a measured throughput figure.

Not available

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

Not available

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.

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

Not available

Not available

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.

Aonn. 4K Pro Streaming Device (2026)

Connector	Count	Version	Role	Data speed (Gbps)
HDMI	1	Not available	Video and audio output	Not available
USB-A	1	USB 2.0	Media storage and peripherals	Not available
USB-C	1	Not available	Power input	Not available
Ethernet	1	Not available	Network	0.1

Source2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Streaming Device panel labels one Ethernet, HDMI, USB 2.0 and power connector. USB connector shapes and roles corroborated by actual-device review.7Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026Own physical inspection identifies USB-C power, HDMI, Ethernet and full-size USB-A. Revision of power-only USB-C is unproved.

BRoku 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.

Smart home

2 of 3 differ

Thread border router

Yes4Maker product pagei5.walmartimages.com/seo/4K-PRO-STREAMING_38d24374-0d07-4393-868a-36fb47ad408e.229daefb3c8f41105c623f8d26541c55.pngRead 8 October 2026Exact current 2026 packaging render displays Built on Thread Border Router badge. Matter logo and separate Matter over Thread gallery claim do not prove accessory commissioning, so Matter controller remains unknown.

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

Google Home2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 202612Maker product pagesupport.google.com/googletv/answer/16522213Read 8 October 2026

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.

Remote control

7 of 9 differ

Remote model

Not available

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.

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.

Bluetooth11Press articleandroidpctv.com/walmart-onn-4k-pro-streaming-device-2026Read 8 October 2026Exact 2026 article explicitly identifies included Bluetooth remote. Its uncertain infrared wording and unsupported 4K75/chipset output claims are excluded. Device Bluetooth revision is not independently verified.

Not available

Remote microphone

Yes2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Remote Control panel labels Gemini for TV button and depicts the microphone openings on the supplied voice remote.

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.

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

Gemini for TV, Google Assistant2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 202612Maker product pagesupport.google.com/googletv/answer/16522213Read 8 October 2026

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.

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

Power, Volume2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Setup 4.7 explicitly names television power and volume. Control route and TV compatibility are unspecified.

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.

Remote finder

Yes1Maker product pagewalmart.com/ip/18382213962Read 8 October 20262Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Button sounds supplied remote for 30 seconds, at up to 30 ft. Backlit Button Design states illumination after any button press.

Not available

Remote backlight

Yes1Maker product pagewalmart.com/ip/18382213962Read 8 October 20262Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026

Not available

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

2 AAA batteries (included)2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 20263Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

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.

Remote charging port

Not available

Not available

Software

7 of 8 differ

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

Google TV (Android TV OS)2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026

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

Operating system at launch

Android TV OS 146Reviewandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_6.jpegRead 8 October 2026Launch-period purchaser screenshot published April 15 displays exact onn 4K Pro Streaming Device, Android TV OS 14 and February 1, 2026 security patch. Current firmware is separate.

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App store

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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.

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

Google Cast3Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

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.

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

Gemini for TV, Google Assistant2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 202612Maker product pagesupport.google.com/googletv/answer/16522213Read 8 October 2026Current Google guidance requires eligible Android 14+/2 GB+ device, supported country/language and account. Gemini AI responses require age 18+ and exclude kids profiles. Non-kids under-18 profiles and devices removed from Google Home use Google Assistant. Google's wider platform rollout does not override this SKU's US/Puerto Rico service restriction.

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).

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.

Yes2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026Gemini panel requires built-in microphone switch on, hands-free mic enabled in account settings and network access. Hey Google searches entertainment, answers questions and controls linked smart home devices.7Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026Own month-long use confirms working hands-free Gemini with physical microphone switch enabled.12Maker product pagesupport.google.com/googletv/answer/16522213Read 8 October 2026Physical device microphone and account Hands-free mic setting must be enabled. Google Home membership/setup is required for Gemini. Feature availability is current to accessed date and is not guaranteed for every market or profile.

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Mobile remote platforms

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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.

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

USB game controllers7Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026Reviewer expressly names game controllers among USB-A peripherals. Specific controller models and Bluetooth gaming support are unproved.

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Power

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Power supply

USB7Reviewandroidauthority.com/onn-4k-pro-2026-review-3677202Read 8 October 2026

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.

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

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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.

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

None of 4 known

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

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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.

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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.

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

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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.

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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Other certifications

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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.

In the box

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In the box

4K Pro Streaming Device, Voice remote, 2 AAA batteries, HDMI cable (1.5 m), AC adapter, Quick Start Guide2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 20263Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026Maker box lists device, remote with two AAA batteries, 1.5 m HDMI cable, AC adapter and QSG. Adapter cable length has conflicting metric/imperial text and is omitted.

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.

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 manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 20263Maker product pageandroidauthority.com/wp-content/uploads/2026/04/Onn-4K-Streaming-Box-2026_2-scaled.jpegRead 8 October 2026

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.

Links

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Product page

www.walmart.com/ip/183822139621Maker product pagewalmart.com/ip/18382213962Read 8 October 2026

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.

Spec sheet

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Manual

www.androidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdf2Owner's manualandroidtv-guide.com/wp-content/uploads/2026/08/Onn-4K-Pro-2026-Manual.pdfRead 8 October 2026

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.

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.

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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.

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