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

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