1.KVM Switch 2. control 4 computer from a single PS/2 console 3, with USB with USB2.0 Hub, MIC and audioSupport Windows ,NT, UNIX, LINUX, NOVELL, DOS ect operating systemResolution: 1920×1440/60HZBandwidth: 200MHZsupport plug and playSwitch mode: manual, hotkeyMetal shell design