Perixx PERIPRO-401 PS2 USB Cable Cord Adapter for Keyboard and Mouse with PS/2 Interface, Built-in USB Controller and Support PS2 Port of KVM Switch, Black - Newegg.com
USB/PS2 Combo Cable for KVM Switches B020-U08/U16 and KVM B022-U16, 6 ft. | Eaton
6 ft 2-in-1 Ultra Thin USB KVM Cable - KVM Cables | Server Management | StarTech.com
Aten 2L5203UP - PS2 to USB Intelligent KVM Cable, 10ft (Black) | Touchboards