Control multiple PCs from one keyboard, mouse and VGA monitor. KVM switch is loaded with features such as hot-key, front panel push button and auto scan control. It has complete keyboard and mouse emulation for simultaneous PCs boot-up process. PRODUCT FEATURES: No power adapter and software required; High video resolution support up to 2048 x 1536; Support up to 400MHz bandwidth; Auto Scan Mode Support with all models; Save your money, time, space, equipment & power; Compact size design, easy portable; Support Microsoft Intellimouse, Microsoft Optical Mouse, Microsoft Intellimouse explorer, Logitech Net Mouse... etc; Support DOS, Win3.X, Win95/98/98SE/ME/XP/2000/NT, Netware, Unix, Linux; Hot Plug -add or remove connected PCs for maintenance without powering down the KVM switch or PCs; No software required, PC selection via Push Buttons, Hot Keys; Power Free - no power adapter needed; Auto Scan Mode for monitoring PCs; Keyboard status restored when switching PCs; LED Display for easy status monitoring; Buzzer sound for switching port confirmation; Provides 2 / 4 Ports series with PS2, USB and PS2 / Audio models.