EL-M31TT-4K22 4K 6G HDR Multi-format USB-C, MiniDP, HDMI to HDMI output table-top switcher

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The EL-M31TT-4K22 4K 6G UHD+ Multi Format to HDMI Table Box is an HDMI, Mini-DP, and USB-C switcher with audio embedding and HDMI output. The table box is designed to be placed on a table, or mounted to any typical table edge using the supplied clamp. The HDMI, Mini-DisplayPort, and USB-C inputs and HDMI output all support resolutions up to 4K@60Hz (4:4:4, 8-bit). With the use of the 3.5mm audio input, stereo audio may be embedded into the HDMI output as well. 

Signal management features, such as automatic source switching based on input signal detection, enable convenient hands-free operation. Additional functionality such as advanced EDID management, HDCP management, and basic signal event automation (which can automatically send CEC commands to the connected display) are also available. 

The unit can be controlled via the front panel button, WebGUI, and Telnet.


  • Supports up to 4K UHD+ (18Gbps, 4K@60Hz 4:4:4, 8-bit) video input & output
  • 1 HDMI, 1 Mini-DisplayPort, 1 USB Type-C video input, and a 3.5mm minijack analogue audio input
  • HDCP 1.x and 2.2 compatible
  • DisplayPort 1.4, USB-C, and DVI 1.0 compliant
  • HDMI output transmits video, audio and data over a single HDMI cable and can reach distances up to 5m at 4K when using standard copper HDMI
  • Supports 10-bit and 12-bit HDR (High Dynamic Range) input & output
  • Designed to be able to use with longer fiber HDMI cabling
  • Analogue audio may be embedded to any source
  • Individual input based EDID management with internal or external EDID options
  • Automatic input selection with hot plug detection enabling hands-free operation
  • Simple CEC based automation control functions
  • Front panel LEDs indicate input selection, power and link status
  • Controllable via front panel button, WebGUI, or Telnet


Inputs1x HDMI [1x HDMI Uncompressed AV and Data]
1x USB-C [1x USB-C / Thunderbolt]
1x Mini Display Port [1x Mini DP]
1x RJ45 [1x Control Port Propriety Data]

Outputs1x HDMI [1x HDMI Uncompressed AV and Data]
Dimensions170mm [W] x 75mm [D] x 77mm [H]
Gross Weight600g