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. -8-port stackable KVM switch with VGA and USB connection to computers. -On Screen Display (OSD) interface for easy management. -Device monitoring with adjustable Auto-Scan, audible feedback and cascade up to 64 computers. -Supports most operating systems and advance mouse designs. -8-port stackable USB KVM switch with On Screen Display (OSD). -Console port supports both USB & PS/2 interface. -Supports Microsoft IntelliMouse, IntelliMouse Explorer, Logitech NetMouse, Optical Mouse, and other MS compatible mice. -Supports Windows 98SE / ME / 2000 / XP / 2003 Server / Vista, Linux, Mac OS and more. -High video quality; up to 2048 x 1536 VGA resolution. -Firmware upgradeable via computer’s serial port. -On Screen Display (OSD) control for easy management. -Adjustable auto-scan via OSD control for monitoring multiple computers. -Keyboards status restored when switching between computers. -LED display for easy status monitoring. -Password protection with auto timeout logout. -Auto-detect bank number when daisy-chaining. -Built-in daisy-chain port for cascading up to 8 levels (64 computers). -Beeping sound for port switching confirmation (enable/disable). -Plug & play and hot-pluggable. -Standard 19” (1U) rack mount design. -2-year limited warranty.