StarTech.com 4-Port USB KVM Swith with OSD - TAA Compliant - 1U Rack Mountable VGA KVM Switch (SV431DUSBU) - KVM switch - 4 ports

Control up to 4 VGA and USB computers from a single keyboard, mouse and monitor. The SV431DUSBU 4 Port 1U Rack Mountable USB KVM Switch with OSD lets you control multiple USB based computers from a single console (USB keyboard, USB mouse, monitor).
Convenient push-button and hot-key controls provide quick, reliable switching between connected computers while manual and auto-scan switching modes and an On Screen Display (OSD) offer additional control options.
Designed to ensure maximum space efficiency, the USB KVM switch features a slim 1U design that fits neatly into a server equipment rack/cabinet (with optional mounting bracket SV431RACK) and offers rear cable connections to eliminate cable tangles and minimize workspace disruption.
Backed by a StarTech.com 3-year warranty and free lifetime technical support.
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 SV431DUSBU 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.