Black Box KV9604A ServSwitch DT 4-Port DVI-I KVM Switch with Transparent USB 2.0 and Audio

A desktop switch for people who need real USB behaviour, not an emulation. Four machines with DVI-I video and USB peripherals share one monitor, keyboard and mouse, with resolutions to 1920 x 1200 at 60 Hz and a fine-tune adjustment for weaker signals. Switching is by front-panel push button.

A built-in hub carries up to four USB 2.0 peripherals across the switch transparently, so devices that refuse to work behind an emulated port behave normally. Stereo audio for speakers and a microphone switches independently of the video and USB channels, which is useful when you want to keep listening to one machine while working on another.