1、Shared port, standard USB 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 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: ABS Operating temperature: -20 - 65 ℃ Port: 2 Ports, 4 Ports (Optional) VGA Resolution: 1920 X 1440 Size:  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 * 0.9in Cable Length: VGA end: ≤30m / 1181in                         USB end: ≤5m / 196.9in Weight: Approx. 109-188g Package List: 1 * Switcher 1 * User Manual (Chinese and English)