4 PORT KVM SWITCH + 4 SET 3-IN-1 PS/2 KVM CABLES FOR PC Support DOS, Win3.X, Win95/98/98SE/2000/2003/Vista/ME/XP, WinNT, Netware, Unix, Linux Support Microsoft Intellimouse, Logitech Net Mouse,etc Hot Plug-add or remove connected PCs for maintenance without powering down the KVM switch or PCs No Software Requaied-easy PC selection via push Buttons Non power