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Status: 2 In stock
Sold Per: Each


The Atlona AT-OME-MS42 is a 4x2 matrix switcher with HDMI, USB-C, and DisplayPort inputs, plus HDMI and HDBaseT outputs. It is also available as the AT-OME-MS42-KIT with the AT-OME-EX-RX receiver. Part of the Omega Series of integration products for modern AV communications and collaboration, the OME-MS42 is HDCP 2.2 compliant and features HDBaseT extension for video up to 4K/60 4:2:0, plus embedded audio, control, Ethernet, and USB over distances up to 330 ft (100 m). All inputs and the local HDMI output support 4K HDR and 4K/60 4:4:4 at HDMI data rates up to 18 Gbps. Additionally, 4K downscaling to 1080p at 60, 30, or 24 hz is available for the HDMI output when connected to an HD sink. The integrated USB extension addresses the challenge of connecting between USB devices at remote locations, and is ideal for software video conferencing and touch or interactive displays. The OME-MS42 includes USB 2.0 and USB-C interfaces for three host PCs, plus two peripheral devices such as a camera, microphone, speakerphone, or keyboard and mouse.

USB Extension for Video Conferencing with Zoom, Skype for Business, Microsoft Teams, and More

The OME-MS42 features integrated USB extension over HDBaseT up to 330 ft (100 m). This capability, plus interfacing for host PCs and USB peripherals makes the OME-MS42 ideal for video conferencing and UC (unified communications) platforms such as Zoom, Skype for Business, Microsoft Teams , Cisco Webex , BlueJeans and GoToMeeting . Available from Atlona is the AT-HDVS-CAM PTZ camera with USB interface.

Versatile Matrix Switcher, Scaler, and Extender

The OME-MS42 is ideal for video conferencing and many other 4K presentation applications with the OME-EX-RX receiver and OME-SR21 scaling receiver. It combines the benefits of auto-switching, integrated display control, USB extension, and more. The OME-MS42 incorporates many popular integration convenience features, while delivering excellent performance and value for 4K presentation and video conferencing applications. The USB-C input is ideal for AV interfacing with newer laptops and mobile devices, plus data connectivity (to the local USB hub and over HDBaseT). The OME-MS42 is designed to be remotely powered by the OME-EX-RX or OME-SR21 receiver through PoE+ (Power over Ethernet). Alternatively, with the optional AT-PS-245-D4 power supply, the OME-MS42 can provide PoE powering to a compatible receiver, and charge laptops and mobile devices through the USB-C port. For additional integration convenience, the OME-MS42 features audio de-embedding and remote management with AMS (Atlona Management System).

Automatic Display Control

The OME-MS42 can provide control to a display through TCP/IP, RS-232, or CEC, without the need for a separate control system. This simplifies system design and integration while reducing costs. With automatic display control, the OME-MS42 can trigger a display to power on automatically whenever a laptop or other device is connected to the OME-MS42. At the end of the presentation, when the presenter disconnects the laptop, the OME-MS42 forces the display to power off. Ease of presenter interaction with the system, and the savings incurred by automatic display shutdown provide a significant return on investment. The OME-MS42 display control capability can also be triggered by an external control system.

Reliable Auto-Switching

The OME-MS42 automatically selects an input source based on detection of the 5 V hot plug detect (HPD) signal, as well as active video. This ensures reliable auto-switching operation for all video sources, including DVRs, DisplayPort / Mini DisplayPort adapters, and other devices that always maintain the HPD line at the 5 V "high" state but may not be delivering active video.


4x2 AV matrix switcher with HDMI, DisplayPort, and USB-C inputs
  • Features USB-C, DisplayPort, and two HDMI inputs
  • Delivers flexible BYOD capability without the need to provide adapters for USB-C or DisplayPort to HDMI
USB-C input for AV, data, and device charging
  • Provides immediate compatibility with laptops and tablets with USB-C ports supporting AV output
  • Allows clutter-free, single cable connectivity to a PC for video conferencing and collaboration
  • Device charging available with optional AT-PS-245-D4 power supply.
HDBaseT and HDMI outputs with selectable AV switching modes
  • Selectable switching modes available with auto-input selection when outputs are mirrored or matrixed
  • Enables simple configuration and effortless user operation, tailored to the specific AV application
Video, audio, power, and data over category cable utilizing HDBaseT technology
  • Transmits up to 330 ft (100 m) at 1080p with CAT5e/6 or 4K/UHD using CAT6a/7 cable
  • Uses easy-to-integrate category cable for low-cost, reliable system installation
USB 2.0 interfacing and extension over HDBaseT
  • Two USB type B interfaces for connection to a host PC, plus two USB type A ports for peripheral devices such as cameras, soundbars, or touch displays
  • USB-C input is also available for data connection to a host PC or USB peripheral
  • Provides an ideal USB integration solution for software video conferencing and other applications
  • Maximum 120 Mbps data rate supported over HDBaseT.
Selectable 4K to 1080p downscaling
  • Integrated video processing available on the HDMI output for down-converting 4K/UHD at 60 hz to 1080p
  • Ideal for applications with 1080p displays, video conferencing codecs, and other HD sink devices
Remote PoE+ (Power over Ethernet) or local powering
  • Industry standard IEEE 802.3at PoE+ is supplied by an OME-EX-RX receiver and OME-SR21 scaling receiver over HDBaseT
  • Also can be locally powered by the optional AT-PS-245-D4 power supply - to supply PoE to a receiver and charge a USB-C mobile device
Audio de-embedding
  • De-embeds two channel PCM audio for the HDBaseT output and delivers to a balanced, analog audio output
  • Provides direct interfacing into an external audio system
Automatic display control
  • Automatically changes display power state based on active or standby mode of the switcher. Control signals to display are transmitted via IP, RS-232, or CEC.
  • Enables display and volume control. CEC enables control of consumer displays (as supported by the display manufacturer).
  • Includes an adjustable lamp cooldown mode to avoid prematurely powering up a projector after shutdown
  • Enables effortless, automated system operation without the need for an external control system
Included accessories
  • Installation guide, surface mounting hardware, and 2 m (6.5 ft), USB-C male-to-male cable (USB 3.1 Gen 1)
Award-winning 10 year limited product warranty
  • Ensures long-term product reliability and performance in commercial and residential systems
  • Specify, purchase, and install with confidence


  • Video conferencing - With the OME-EX-RX or OME-SR21 receiver, this switcher provides interfacing for local and remote USB devices for soft codec conferencing, with video and USB switched together between host PCs. As a matrix switcher with downscaling, the OME-MS42 is also ideal for hardware-based video conferencing, with the ability to route and optimize any source content to the codec far-end.
  • Meeting rooms and conference rooms - The OME-MS42 can serve as an AV integration centerpiece in a credenza, with interfacing into sources in the rack.
  • Auditoriums and lecture halls - This switcher can be used for presenting 4K video content through the projector, while also optimizing for a 1080p confidence monitor.
Type Multi-Format, 4 x 2
Video Resolution 4096 x 2160 at 60/50/30/25/24 hz, 3840 x 2160 at 60/50/30/25/24 hz, 1080p at 60/59.9/50/30/29.97/25/24/23.98 hz, 1080i at 30/29.97/25 hz, 720p at 60/59.94/50 hz, 576p at 50 hz, 576i at 50 hz, 480p at 60/59.96 hz, 480i at 30 hz
VESA Pattern 2560 x 1600, 2048 x 1536, 1920 x 1200, 1680 x 1050, 1600 x 1200, 1440 x 900, 1400 x 1050, 1280 x 1024, 1280 x 800, 1366 x 768, 1360 x 768, 1152 x 864, 1024 x 768, 800 x 600, 640 x 480
Color Space YUV, RGB
Chroma Subsampling 4:4:4, 4:2:2, 4:2:0
Color Depth 8-bit, 10-bit, 12-bit
Audio Format LPCM 2.0, LPCM 5.1, LPCM 7.1, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos , DTS Digital Surround, DTS-HD Master Audio, DTS:X , Stereo 2-Channel
Audio Sample Rate 32 khz, 44.1 khz, 48 khz, 88.2 khz, 96 khz, 176.4 khz, 192 khz
Audio Bit Rate 24 Mbps
HDCP Compliance HDCP 2.2
HDMI Compliance HDMI 2.0
Connector Type (2) Type-A 19-Pin Female HDMI In, (1) Female Display Port In, (1) USB Type-C v3.1, 24-Pin Female AV Input, (1) Type-A 19-Pin Female HDMI Out, (1) RJ-45 Female HDBaseT Out, (2) Type-A 4-Pin Female USB Hub, (2) Type-B Female USB Host, (1) 5-Pin Captive Screw, Balanced/Unbalanced 2-Channel Audio Out, (1) 3-Pin Captive Screw (Bidirectional) RS-232, (1) RJ-45, 100Base-T LAN, (1) Internal 100 - 240 VAC 50/60 hz, IEC Female Connector PWR
Data Rate 120 Mbps
Audio Balanced Output +4 dBu (Nominal Gain), +20 dBu (Headroom)
Frequency Response 20 hz - 20 khz
Total Harmonic Distortion <0.004% at 20 hz to 20 khz
S/N Ratio >105 dB at 1 khz (Zero Clipping at 0 dBFS, Unweighted)
Control Type CEC, RS-232, IP
Resolution/Distance 4K/UHD HDMI In/Out: 5 m, 1080p HDMI In/Out: 10 m, 4K/UHD Cat5e: 90 m, 1080p Cat5e: 100 m, 4K/UHD Cat6/6a/7: 100 m, 1080p Cat6/6a/7: 100 m
Control Buttons (2) Momentary, Tact-Type (HDMI Out and HDBaseT Out), (3) Momentary Recessed (IP Mode, Rest and Test)
Indicators (8) Blue LED and (3) Green LED (IP Mode, Reset, Test)
Temperature Rating 32 - 113 deg F (Operating), -4 to 140 deg F (Storage)
Relative Humidity 20 - 90% (Non-Condensing)
Power Supply 100 - 240 VAC at 50/60 hz Input, 24 VDC at 5 A Output
Power Consumption 8.6 W (Unit), 104 W (Full load)
Mounting Type Surface
Dimensions 8.64 Inch W x 10 Inch D x 1.73 Inch H
Includes (1) 5-Pin Captive Screw Connector, (1) 3-Pin Captive Screw Connector (1) USB-C Cable, (2) Mounting Plate, (4) Mounting Screw, (1) Long Rack Ear, (1) Short Rack Ear, (4) Feet with Rubber Grips, (1) 24 VDC Power Supply, (1) IEC Power Cord, (1) Installation Guide, OME-EX-RX HDBaseT Receiver
Weight 1.57 kg
File Download(s): Cut Sheet | Installation Instruction |