The ATEN CE801 is a KVM extender USB True 4K HDMI over Cat 6, designed to transmit HDMI video signals and USB/data over Category 6 cable. It supports Ultra HD 4K resolution (3840x2160), extends USB peripherals (keyboard, mouse, other devices), and provides Ethernet pass-through. The unit functions as a KVM & data switch and typically includes a transmitter and a receiver to enable remote access to a computer or video source via Category 6 cable.