Features: 1. No software required. 2. Support SVGA, VGA and multi-sync monitor. 3. The LED shows the monitor status. 4. No external power supply required. 5. Press the button on the KVM switch to switch between computers. 6. Share USB devices such as USB printers, USB scanners, USB flash drives, USB HUBs, etc. Specifications: Maximum Resolution: 1920*1440 Bandwidth: 500MHZ Console Port: 3 Supported Computers: 4 Keyboard Emulation: USB Mouse Emulation: USB Keyboard Input/Output: USB Mouse Input/Output: USB VGA Input/Output: High Density D-Sub 15 Pin LED Indicator: 4 Color: Black Support: For DOS, Win 3.X, Windows 95/98 / for ME / 2000 / XP / Vista / Windows 7/8, WinNT, Netware, Unix, Linux Package List: 1 * 4-Port USB KVM Switch 1 * User Manual .