The ATEN CS1798 8-Port USB HDMI KVM Switch provides seamless control of up to 8 HDMI computers through a single USB keyboard, mouse, and monitor console. Cascadable up to 3 levels (512 computers), it features a multi-display mode, OSD backup/restore, and superior 1080p video quality. The switch supports audio output, offering a rich surround sound experience, and provides a USB 2.0 hub for additional devices. Ideal for environments needing multi-computer management like data centers and multimedia workstations.