StarTech.com PS/2 Keyboard and Mouse Extender Over Cat 5 (PS2UTPEXT);

This PS/2 over CAT 5 extender is the perfect solution for connecting PS/2 devices using standard Cat5 cable at extended distances from the host computer. The extender allows you to lengthen PS/2 signals by up to 100 meters (328ft), making it perfect not only for current configurations, but also ideal for any future reconfigurations. The PS/2 extender is comprised of two extender units. The local unit is installed near the PC and the remote unit is placed by the keyboard and mouse, up to an impressive 100m away. With no software or power adapter required, installation and setup is quick and hassle-free.