Number of Computers Controlled 8 PS/2 & USB Signal Combined On-screen Display (OSD) Supports daisy chaining with up to 3 cascade levels. Keyboard emulation prevents boot errors Supports hot-plugging: All devices connected to the KVM can be added or removed at any time without shutting down the KVM. Select a PC to switch to using one of 3 interfaces: Front Panel Button Hot-Keys on a PS/2 keyboard OSD Menu (On Screen Display) LED display for PC and/or server status monitoring Compatibility Fully compliant with USB 1.1/ 2.0 specifications Support for Windows, Linux, Mac OS 9/ OS X, and Sun Microsystems Operating Systems Rack mountable in 19″ system rack (1U) Monitor resolutions of up to 2048 x 1536