The KVM-DV04 allow up to four IBM compatible computers to be controlled from one keyboard one mouse and one DVI monitor. Switching between computers is as easy as pressing the button on the front of the switch or by entering a hot-key command from your keyboard no interface card or software is required the switch is independent of operating systems and allows the attached computers to run different applications. Specification Cascade configuration expands system capabilityAuto scan automatically selects computers sequentiallySupports Microsoft IntelliMouse (Pro) IntelliTrackballHot-key functions allow easy computer accessBuilt-in buzzer for hot-key command confirmationKeyboard states automatically saved and restored when switching computersOperating system independent transparent to all applicationsTrue plug and play system configurationKeyboard and mouse can be hot plugged at any timeDVI-I interfaceDDC2B compatiblePower-free operationComputer Port : 4Cascade control : Up to 16Front Panel button control : 4Hot plug and play : YesHot-key control : YesAutomatic scan interval : 3 8 15 30 secondsCable Length (Max) : 30 Mtr at Console 30 Mtr at PCMonitor Type : DVI-IComputer keyboard connector : PS/2Mouse : PS/2Monitor : DVI-I FemaleH x W x D (mm) : 44 x 220 x 130Weight : 420g 900gPower Supply Optional : 9v DC 500 mA