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.