8PT USB PS/2 RM KVM SWCH W/ OSD The 8-Port USB KVM Switch with On Screen Display (TK-804R) lets you manage multiple computers with just one set of keyboard, monitor and mouse. This rack mount device supports USB and PS/2 interface on the console side and USB interface on the PC side. Users can switch between PCs using hot-key, push button or On Screen Display for flexible management. Hot-plug PCs quickly to avoid downtime. A maximum of 64 PC connections are supported when you daisy chain multiple TK-804R(s). The 8-Port USB KVM Switch is the perfect choice for managing multiple PC's.