This is the transmitter half of an ATEN 4K HDMI KVM-over-IP extender kit — it connects directly to the source PC (video, keyboard and mouse) and sends that signal out over a standard IP network to a matching receiver unit (see the paired listing, MAR-0005688) at the remote workstation, supporting 4K video resolution. Setups like this let the actual computer stay in a secured server room or equipment rack while a user elsewhere gets a full local desktop experience — screen, keyboard and mouse — over existing network cabling rather than a dedicated point-to-point run. Common in control rooms, broadcast environments and secure facilities. A receiver unit and supporting network infrastructure are required alongside this transmitter for a working installation.