This 4-port USB+PS/2 KVM Switch lets you control multiple PS/2 or USB-controlled computers from a single console (USB keyboard, USB mouse, monitor). The versatile USB PS/2 KVM switch features convenient pushbutton and hot-key control for quick, reliable switching between connected computers. A convenient and straight-forward control solution, the USB PS/2 KVM switch supports both manual and auto-scan modes and simple configuration through the built-in OSD. Designed to ensure maximum space-efficiency, the USB+PS/2 KVM switch features a slim 1U design that fits neatly into a server equipment rack/cabinet and offers rear cable connections to eliminate cable tangles. Rackmount your KVM switch If you''d like to mount this KVM switch to your server rack, StarTech.com offers a 1U Rackmount Bracket (sold separately) that turns this KVM into a rackmountable KVM. The SV431DUSB only works with specific 2-in-1 VGA and USB cables (sold separately), a list of StarTech.com approved cables are below: 6 ft Ultra Thin USB VGA 2-in-1 KVM Cable 6 ft Ultra Thin USB VGA 2-in-1 KVM Cable 10 ft Ultra Thin USB VGA 2-in-1 KVM Cable 15 ft Ultra Thin USB VGA 2-in-1 KVM Cable This product is TAA compliant and is backed by a Startech.com 3 year warranty with lifetine technical support.