Full Details on Amazon.com : http://www.amazon.com/gp/product/B0015Z4726?tag=tsukuyomi-20

Linkskey 4-Port Dual Monitor DVI/VGA USB KVM 7.1 Surround/Microphone/USB with Cables (LDV-DM714AUSK)

Full driver support for all types of USB keyboard and mouse
Support 71 surround sound for true theater audio experience
All-time full DDCEDID emulation for video compatibility and stability
True Transparent USB TTU Emulation technology with an integrated ASIC
User-configurable simultaneousIndependent switching