ATEN 8-Port Multi-Platform PS/2/ USB KVM Switch, CS1758 One USB console controls 8 computers. Cascadable up to 3 levels - provides up to 512 computers. Dual Interface supports computers with PS/2 or USB keyboards and mice. Buzzer On/Off via hotkey and OSD. Computer selection via front panel pushbuttons, hotkeys and OSD. Superior video quality - up to 2048 x 1536; DDC2B. Rack mountable in 19" system rack. Device Type - KVM Switch Form Factor - N/A Dimensions WxDxH - 450 x 170 x 67 mm Weight - 2.72 kg Ports Qty - 8 Ports