The Aten 2-Port USB 4K HDMI (CS742H-AT-G) is a compact switch that lets two computers share a single 4K HDMI display and USB peripherals. Ideal for office desks, meeting rooms or home setups, it simplifies workflow by enabling fast switching between sources while preserving high-resolution video. Easy to install and use, the unit helps reduce cable clutter and lets you control two systems with one set of monitor, keyboard and mouse.