{"data":{"slug":"roku-express-4k-plus","type":"streaming_device","brand":"Roku","name":"Express 4K+","aliases":["Roku Express 4K Plus","3941R","3941R2","3941X","3941X2"],"release_date":"2021-05","url":"https://arkivo.dev/streaming-devices/roku-express-4k-plus","specs":{"series":"Express","model_numbers":["3941R","3941R2"],"gtins":null,"announce_date":"2021-04-13","status":"discontinued","predecessor":null,"successor":"roku-streaming-stick-plus-2025","launch_price_usd":39.99,"launch_price_eur":null,"markets":["US"],"colors":["Black"],"manufacturer_url":"https://web.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plus","spec_sheet_url":null,"manual_url":"https://image.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdf","eprel_registration_number":null,"warranty_years":1,"form_factor":"box","max_output_resolution":{"width_px":3840,"height_px":2160},"max_output_refresh_rate_hz":60,"video_output_modes":[{"width_px":3840,"height_px":2160,"refresh_rate_hz":60,"hdr_format":null,"bit_depth_bits":null,"chroma":null}],"hdr_formats":["hdr10","hdr10_plus","hlg"],"dolby_vision_profiles":null,"hdmi_version":"2.0b","hdcp_version":"2.2","hdmi_cec":true,"automatic_frame_rate_matching":null,"dynamic_range_matching":null,"upscaling":["720p to 1080p","720p and 1080p to 4K"],"video_codecs":["H.264","HEVC"],"video_decode_limits":null,"video_containers":["MKV","MP4","MOV"],"drm_systems":["Widevine L1","PlayReady"],"audio_formats":["Digital stereo","DTS Digital Surround","Dolby-encoded audio","MP3","FLAC","PCM","ALAC","Vorbis","AAC"],"audio_passthrough_formats":["DTS Digital Surround","Dolby-encoded audio"],"dolby_atmos":false,"audio_channel_configurations":["2.0"],"max_audio_sample_rate_khz":null,"max_audio_bit_depth_bits":null,"bluetooth_audio":false,"bluetooth_codecs":null,"soc":null,"cpu":"ARM Cortex-A55","cpu_cores":null,"cpu_clock_max_ghz":null,"gpu":null,"ram_gb":1,"ram_type":null,"storage_gb":null,"storage_type":null,"expandable_storage":null,"storage_expansion_methods":null,"wifi_standard":"wifi_5","wifi_bands":["2_4ghz","5ghz"],"wifi_mimo":null,"ethernet_speed_mbps":null,"optional_ethernet":true,"bluetooth_version":null,"ports":[{"type":"hdmi","count":1,"version":"2.0b","role":"Video and audio output","speed_gbps":null},{"type":"micro_usb","count":1,"version":null,"role":"Power input and compatible optional Ethernet adapter connection","speed_gbps":null}],"thread_border_router":null,"matter_controller":null,"smart_home_platforms":["Apple HomeKit","Google Home","Amazon Alexa"],"remote_model":"Roku Voice Remote with TV controls","remote_connection":null,"remote_microphone":true,"remote_voice_assistants":["Roku Voice"],"remote_tv_control":["Power","Volume","Mute"],"remote_finder":null,"remote_backlight":null,"remote_power":"2 AAA batteries","remote_charging_port":null,"operating_system":"Roku OS","launch_os_version":null,"app_store":"Roku Streaming Store","casting_protocols":["Apple AirPlay 2"],"voice_assistants":["Roku Voice","Amazon Alexa","Google Assistant","Apple Siri"],"hands_free_voice_control":null,"mobile_remote_platforms":["android","ios"],"accessibility_features":null,"game_services":null,"game_controller_support":null,"power_supply":"usb","power_input":"5 V, 1 A","included_adapter_output_w":null,"power_consumption_max_w":null,"power_consumption_standby_w":null,"measured_power_consumption_video_w":null,"measured_power_consumption_idle_w":null,"measured_power_consumption_standby_w":null,"measured_boot_time_s":null,"dimensions_mm":{"width_mm":86.3,"height_mm":20.8,"depth_mm":39.3},"weight_g":44.6,"remote_dimensions_mm":null,"remote_weight_g":null,"fcc_id":null,"other_certifications":["ENERGY STAR"],"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)"],"hdmi_cable_included":true},"variants":[],"sources":[{"url":"https://web.archive.org/web/20221010180237/https://www.roku.com/products/roku-express-4k-plus","kind":"manufacturer_page","accessed":"2026-10-11","fields":["series","model_numbers","manufacturer_url","max_output_resolution","max_output_refresh_rate_hz","video_output_modes","hdr_formats","hdcp_version","upscaling","audio_formats","audio_passthrough_formats","audio_channel_configurations","wifi_standard","wifi_bands","optional_ethernet","ports","smart_home_platforms","remote_model","remote_microphone","remote_tv_control","power_input","dimensions_mm","weight_g","other_certifications","in_the_box","voice_assistants","markets","form_factor","remote_voice_assistants"],"notes":{"series":"The 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_numbers":"Model row 3941R. 3941R2 is the same Express 4K+ device according to Roku's answer on the Best Buy product Q&A page.","manufacturer_url":"Internet Archive capture of the maker's product page, because the live URL no longer shows this player.","max_output_resolution":"Tech 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_rate_hz":"Tech specs, TV Compatibility: up to 2160p at 60fps. HDR and chroma conditions are not stated.","video_output_modes":"One 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":"Tech specs, 4K HDR TVs: supports HDR10/10+ and HLG. No Dolby Vision is listed.","hdcp_version":"Tech specs footnote: requires a compatible TV with an HDMI input that supports HDCP 2.2. This is the stated protected-output chain version.","upscaling":"HD TVs: up to 1080p with up-scaling from 720p. 4K TVs: up to 2160p with upscaling from 720p and 1080p.","audio_formats":"Maker 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_formats":"Literal maker lines. Dolby codecs stay generic because the page does not name Dolby Digital, Dolby Digital Plus or Atmos.","audio_channel_configurations":"Digital stereo over HDMI. No numeric multichannel layout is stated.","wifi_standard":"Networking row: 802.11ac dual-band Wi-Fi (2.4 GHz / 5 GHz). 802.11ac is Wi-Fi 5.","wifi_bands":"Networking row: 2.4 GHz / 5 GHz.","optional_ethernet":"Networking 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.","ports":"Ports 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_platforms":"Compatibility rows: works with Apple AirPlay and HomeKit, Google Home and Alexa. This does not establish Matter or Thread.","remote_model":"Remote 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_microphone":"Remote control row and the Voice button on the quick start guide diagram. Press-to-talk remote, not hands-free.","remote_tv_control":"Remote TV power and volume buttons work with most TVs. Mute is the third button named in the Remote control row.","power_input":"Power input row: 5V - 1A.","dimensions_mm":"Size row: height 0.8 in (20.8 mm), width 3.4 in (86.3 mm), depth 1.5 in (39.3 mm). Player only.","weight_g":"Weight row: 1.6 ounces (44.6 g). Player only, without remote, cable or adapter.","other_certifications":"Page text states this Roku player is ENERGY STAR certified. No certificate number or listing was checked.","in_the_box":"What's in the box list.","voice_assistants":"Compatibility 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.","markets":"The 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.","form_factor":"The 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.","remote_voice_assistants":"Voice remote row and the Roku Voice search button. Roku Voice is the only assistant on the supplied remote."}},{"url":"https://image.roku.com/c3VwcG9ydC1B/Roku-Express-4K-Plus-QSG-US-Fall2022-pdf.pdf","kind":"manual","accessed":"2026-10-11","fields":["manual_url","remote_power","hdmi_cable_included","power_supply"],"notes":{"manual_url":"US quick start guide for model 3941, linked from the maker's setup article.","remote_power":"What's included page: two pre-installed AAA batteries.","hdmi_cable_included":"What's included page shows a separate Premium High Speed HDMI cable. Step 1 connects the player to the TV with the included cable.","power_supply":"Step 2 powers the player through the included USB power cable and power adaptor, or from a TV USB port. Power input is micro USB."}},{"url":"https://developer.roku.com/dev/docs/hardware","kind":"manufacturer_page","accessed":"2026-10-11","fields":["status","cpu","ram_gb","operating_system"],"notes":{"status":"Express 4K+ rows (3941X Marlin, 3941X2 Bailey) sit in the Updatable list. Roku says it no longer manufactures these products. Retailers may still hold stock.","cpu":"Express 4K+ rows: ARM Cortex A55. The core count is not stated for this model.","ram_gb":"Express 4K+ rows: 1 GB.","operating_system":"Hardware table is the Roku OS developer reference. The player runs Roku OS."}},{"url":"https://support.roku.com/article/1500004688162","kind":"manual","accessed":"2026-10-11","fields":["app_store"],"notes":{"app_store":"How 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."}},{"url":"https://support.roku.com/article/360063908513","kind":"manual","accessed":"2026-10-11","fields":["mobile_remote_platforms"],"notes":{"mobile_remote_platforms":"Getting to know your Roku Express 4K or Express 4K+: the free Roku mobile app for iOS and Android controls the device by voice."}},{"url":"https://support.roku.com/article/screen-mirror-your-apple-device-with-airplay","kind":"manual","accessed":"2026-10-11","fields":["casting_protocols","voice_assistants"],"notes":{"casting_protocols":"Roku 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_assistants":"Apple HomeKit lets you use Siri and the Home app on an Apple device to control the player. Supported on Roku Express 4K+ (3941)."}},{"url":"https://support.roku.com/en-us/article/how-to-use-bluetooth-headphone-mode","kind":"manual","accessed":"2026-10-11","fields":["bluetooth_audio"],"notes":{"bluetooth_audio":"Roku 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."}},{"url":"https://support.roku.com/article/share-media-over-usb-or-network","kind":"manual","accessed":"2026-10-11","fields":["video_codecs","video_containers"],"notes":{"video_codecs":"Roku 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_containers":"AVC and HEVC in MKV, MP4 and MOV. Network media-server route. App, firmware and file capabilities apply."}},{"url":"https://developer.roku.com/dev/docs/content-protection","kind":"manufacturer_page","accessed":"2026-10-11","fields":["drm_systems"],"notes":{"drm_systems":"Widevine 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."}},{"url":"https://www.techradar.com/reviews/roku-express-4k-2021","kind":"review_site","accessed":"2026-10-11","fields":["hdmi_version","hdmi_cec"],"notes":{"hdmi_version":"Review 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.","hdmi_cec":"Review 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."}},{"url":"https://www.tomsguide.com/reviews/roku-express-4k-plus","kind":"review_site","accessed":"2026-10-11","fields":["dolby_atmos"],"notes":{"dolby_atmos":"Review of the Express 4K Plus: no Dolby Vision or Atmos audio. TechRadar and SlashGear agree."}},{"url":"https://techcrunch.com/2021/04/13/roku-launches-a-rechargeable-hands-free-voice-remote-and-other-devices-rolls-out-roku-os-10","kind":"press","accessed":"2026-10-11","fields":["announce_date","launch_price_usd","release_date"],"notes":{"announce_date":"Article dated 2021-04-13 announces the Roku Express 4K+.","launch_price_usd":"Express 4K+ at $39.99 in the US. Price excludes sales tax.","release_date":"Goes on sale in the US in mid-May 2021. AFTVnews and Tom's Guide also give mid-May."}},{"url":"https://www.quill.com/roku-express-4k-plus-black-3941r/cbs/55407410.html","kind":"retailer","accessed":"2026-10-11","fields":["colors"],"notes":{"colors":"Retailer listing for the Roku Express 4K Plus 3941R, colour Black."}},{"url":"https://images.thdstatic.com/catalog/pdfImages/5b/5b125123-9613-4138-9e94-2095d9c4cb30.pdf","kind":"manufacturer_pdf","accessed":"2026-10-11","fields":["warranty_years"],"notes":{"warranty_years":"Roku Limited Warranty page 1: one year for Roku streaming players and included remotes bought by an end user in the United States."}},{"url":"https://support.roku.com/article/connect-to-a-wired-network-with-usb","kind":"manual","accessed":"2026-10-11","fields":["optional_ethernet"],"notes":{"optional_ethernet":"Roku 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."}},{"url":"https://www.bestbuy.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-b599-10e45fb527a2","kind":"retailer","accessed":"2026-10-11","fields":["model_numbers"],"notes":{"model_numbers":"Best 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."}},{"url":"https://www.roku.com/blog/players-25","kind":"manufacturer_page","accessed":"2026-10-23","fields":["successor"],"notes":{"successor":"Roku says the Roku Streaming Stick Plus replaces the Roku Express 4K+ at the same price."}}],"fields_filled":52,"updated":"2026-10-23"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}