The TruLink 4-Port VGA and USB 2.0/PS/2 KVM with Audio by Cables To Go enables a user to control up to four computers with a single keyboard, mouse, monitor, and speaker set. For added convenience, this KVM switch works with both USB and PS/2 mice and keyboards. The TruLink USB 2.0/PS2 KVM Switch also features a 3-port USB 2.0 hub, so any of the four connected computers can share USB devices. The added audio feature lets users enjoy audio from each of the connected computers as well, including listening to the audio from one computer while working on files from another.