4K UHD HDMI/VGA over IP Transmitter with USB/KVM Extension

CH-U331TX - 45 degree
CH-U331TX - 45 degree
CH-U331TX - Front
CH-U331TX - Back

The CH-U331TX, one part of a 4K UHD Multi-Function Extension system, is able to extend HDMI or VGA signals along with KVM through Cat.5e/6/7 network cable and transmit UHD video signals, audio and USB up to 100m on a single cable. The transmission distance can be further extended (up to 100m per segment) by using gigabit network switches, allowing the user to cascade the system without signal loss or introducing delay. The Receiver unit includes a built-in 3 port Ethernet switch which can be used to extend and expand a basic system without the need for an external network switch.

CH-U331TX also allows you to send a single AV signal to a large number of Receivers within the same local network. Additionally, that same multicast signal can be used to create large multi-display video walls with amazing simplicity. This system is perfect for both residential and commercial installation environments.

The USB functionality allows the system to act like a remote USB hub which, when combined with the video extension feature, provides a flexible remote KVM platform. Configuration information is provided via the On-Screen Display (OSD) on the Receivers and both unit types can be controlled via front panel buttons, WebGUI, Telnet, and the AV over IP Master Controller .


  • Video, audio and control transmission over TCP/IP in Unicast (point-to-point) or Multicast (single-to-many, many-to-many) modes
  • When connected, the analog Line In audio is automatically embedded into the transmitted signal for output on connected Receivers via HDMI and their analog Line Out ports
  • The Mic In on a connected Receiver will send audio directly to the analog Line Out on this Transmitter
  • May be powered directly by PoE when connected to a Gigabit Ethernet switch that provides PoE (802.3af)
  • Supports USB keyboard, mouse and storage extension

Inputs 1x HDMI [1x Uncompressed AV and Data]
1x HD-15 [1x VGA RGBHV]
1x 3.5mm [1x LINE IN Stereo(L/R)]
1x 3.5mm [1x IR IN Infrared Receiver]
1x DE-9 [1x RS-232 Data]
Outputs 1x RJ-45 [1x PoE Propriety Data / IP Control / LAN Serving]
1x 3.5mm [1x LINE OUT Stereo(L/R)]
1x 3.5mm [1x IR OUT Infrared Emitter]
1x USB Type-B [1x Propriety Data]
PSU: 5V/2.6A
Dimensions 231mm [W] x 120mm [D] x 25mm [H]
Net Weight 660g