StarTech.com 4-Port Dual KVM Switch with Audio for DVI Computers – Built-in USB Hub (SV431DD2DUA)

Front panel push-buttons and Hot-key functions for easy switchingSupports resolutions up to 2048x1536 (Analog) and 1920x1200 (digital)USB 2.0 hub for peripheral sharing (Thumb drives, external hard drives, web cams, etc.)Audible tone confirms port switchin