The ATEN CS1822 KVMP™ Switch offers effortless management of two HDMI interface computers from a single USB keyboard, mouse and HDMI monitor. Supporting the most superior video quality up to 4K DCI (4096 x 2160 @ 60Hz), the CS1822 optimizes user experience of multitasking. Supports Video DynaSync. Audio Mixer Modes – mixes up to two audio sources as audio output. Computer selection via pushbuttons, hotkeys, mouse and RS-232 commands.