CONTROL 4 COMPUTERS ON 1 MONITOR: This KVM Switcher allows you to control 4 PC Computers or laptops with one keyboard and mouse simultaneously. It’s ideal to use at work. PLUG-AND-PLAY & ONE-BUTTON SWAPPING: Comes with 4 PCS USB VGA cables (5 feet each). Plug and play. You can power from your computer via USB cable. No power supply or software is needed. Push the button and you can switch computer in no time! STABLE CONNECTION: Supports USB 2.0. so you can connect the KVM switcher stably with more devices, such as scanner, printer, digital video camera and more. WIDE COMPATIBILITY: It perfectly compatible with most systems including DOC, Win3, X, Win 95/98 / 98se / 2000 / ME / XP，7,8.1,10，Win NT，Netware，Unix，Linux and Mac. Simply plug and play. No driver is needed. IDEAL FOR HOME & BUSINESS: With this KVM switcher and USB 2.0, you are able to control more USB connecting devices like a printer or a flash drive. Use it for working, video meeting, teaching, conference and more. You can use it at home and in the office, helping you to save time, desk space and money.