Supports computers with USB (Universal Serial Bus) keyboards & mice & DVI monitor 1 console controls 2 or 4 computers & two additional USB (Universal Serial Bus) devices Full inputoutput audio support use 1 mic & speakers with 2 or 4 PCs Allows independent switching of the KVM & audio with hotkey or manual button switches Complete keyboard & mouse emulation for error-free booting & realtime switching Easy installation no software required Supports digital video resolutions up to 1600 x 1200 Firmware upgradeable The CS-1762 snd CS-1764 audio enabled DVI KVM Switches are designed for the multiple DVI enabled PC & Mac owner DVI-friendly SOHO environment & technology enthusiast. This unique KVM switch permits one DVI flat panel display & one PC or Macintosh keyboard & mouse combination to effortlessly control two or four DVI- enabled computers without the distortion associated with analogue to digital conversion. This space saving DVI KVM switch utilises front panel push buttons or convenient hotkeys for switching between computers & is fully audio enabled for maximum benefit to your DVI work station at a minimal cost to your desktop space.