The XTENDEX® 4K 18Gbps HDMI USB KVM Extender transmits uncompressed digital Ultra-HD 4Kx2K 60Hz 4:4:4 HDMI signal, USB, and IR up to 230 feet over a single CATx cable. Each extender consists of a local unit that connects to a computer, and a remote unit that connects to a keyboard, monitor and mouse.