Features:1. Shared port, standard USB 2.0 interface.2. Support widescreen display with a resolution of 1920 * 1440.3. Button switch, plug and play, no need external power supply.4. Support online games and hard disk video recorders.5. High-speed data transmission, stable performance.6. Support for Microsoft mouse, for logitech mouse and so on.7. Support system: for DOS, for Win3X, for Win95 / 98 / 98SE / 2000 / ME / XP, for WinNT, for Netware,for Unix, for Linux, for Win 7.Specifications:Material: ABSOperating temperature: -20 - 65 Port: 2 Ports, 4 Ports (Optional)VGA Resolution: 1920 X 1440Size: 2 Ports: 9.5 * 6 * 2.3cm / 3.7 * 2.4 * 0.9in 4 Ports: 15.6 * 6.5 * 2.3cm / 6.1 * 2.6 * 0.9inCable Length: VGA end: 30m / 1181in USB end: 5m / 196.9inWeight: Approx. 109-188gPackage List:1 * Switcher1 * User Manual (Chinese and English)