StarTech.com 4-Port Dual KVM Switch with Audio for DVI Computers - Built-in USB Hub (SV431DD2DUA) - KVM / audio / USB switch - 4 x KVM / audio / USB - 1 local user

USB 2.0 hub for peripheral sharing (Thumb drives, external hard drives, web cams, etc.) Supports all USB-capable operating systems (Windows 98e/SE/ME/2000/XP/Vista/7, Linux, Mac OS, etc.) Status LED display for easy port status monitoring TMDS compliant to support DDC2B emulation and HDCP for digital contents protection Audible tone confirms port switching Front panel push-buttons and Hot-key functions for easy switching Supports resolutions up to 2048x1536 (Analog) and 1920x1200 (digital) EDID retention - eliminates hassle when switching between computers as the KVM "remembers" monitor settings Combined or independent switching of audio ports