The ATEN PS/2 to USB Intelligent KVM cable connects USB computers to PS/2 KVM switches without any adapters. It supports multiple OS such as Windows, Mac, and Sun Solaris. This particular cable is designed for the ATEN switches with custom designed DB25 at the PS/2 end. There is no software installation required, just plug the DB25 end of the cable into your ATEN KVM and plug the USB end of the cable into your USB computer.