... ports and power up to 500mA each port4. Extensively compatible with scanner, digital camera, digital vidicon, optical mouse, Keyboard, ... power supply required10. Single chip integrated USB HUB controller with embedded proprietary processor11. Easy for use and have more ... OS9.1 or higher. 4 Port HUB with Switch Verified Information This information is Verified by TÜV Rheinland and validity period ...