StarTech.com Long Range 1000 ft USB VGA KVM Over CAT5/5e CAT6 UTP Extender - KVM Console Over Ethernet for multiple servers/PC's IT Grade (SV565UTPUL) - KVM extender

Control a KVM or server from up to 300m (984ft) away. The SV565UTPUL Long Range USB VGA KVM Console Extender over Cat5 UTP (1000 ft) lets you control a server, computer or multiple computers (connected through KVM Switch) over a standard Cat5 or Cat6 UTP network cable connection, at distances of up to 1000ft (300m) away.
You can use your existing USB keyboard, USB mouse, and monitor to access both the server room and your office computer, saving space and avoiding the need for a dedicated remote console by allowing you to switch between workstation view and KVM view at the remote location.