This switch has built-in USB 2.0 on each of the front and rear panels and audio signal connectors. It allows users to control the computer and peripheral devices via a signal console at ease. • 4-port KVM switch with USB 2.0 support and 2.1 surround sound audio • One console controls four computers and two additional USB devices • 2-port USB 2.0 hub built in • USB 2.0 compliant • Dual interface - supports computers with PS/2 or USB keyboard and mouse configurations • Audio enabled - full bass response provides a rich experience for 2.1 surround sound systems • Console audio ports on front panel for easy access – ideal for IP phone users • Supports both USB and PS/2 keyboards and mice – configurations available with the included USB-to-PS/2 converter: USB keyboard and mouse; PS/2 keyboard and mouse; or PS/2 keyboard and USB mouse • Independent switching of KVM, USB, and audio focus • Superior video quality; 2048 x 1536; DDC2B • Supports widescreen resolutions • Computer selection via front panel pushbuttons, OSD (On Screen Display), and hotkeys • Multiplatform support: Windows 2000/XP/Vista, Linux, Mac, and Sun • Console mouse port emulation / bypass feature supports full mouse driver and multifunction mice • Display Emulation Technology - stores the console monitor's EDID (Extended Display Identification Data) to optimize display resolution • Complete keyboard emulation for error-free booting • Sun/Mac keyboard support and emulation* • Auto Scan Mode for monitoring all computers • LED Display for easy status monitoring • Easy installation – no software required • Firmware upgradeable*1.PC keyboard combinations emulate Sun/Mac keyboards2.Sun/Mac keyboards only work with their own computers