Aten 8-Port USB HDMI KVM Switch (CS1798) One USB console controls up to eight HDMI interface computers and two additional USB 2.0 devices HDMI compatible Multi-Display feature - stack up to eight CS1798 units and display video from up to eight monitors(dual display/triple display/quad display/multi-display) Computer selection via front panel pushbuttons, hotkeys, and multilingual on-screen display (OSD) Independent switching of KVM and USB focus OSD Backup/Restore feature-enables the administrator to back up the switch's configuration and user profile information Superior video quality-supports up to 1080p / 1920 x 1200at60Hz Supports widescreen resolutions