... ports and power up to 500mA each port4. Extensively compatible with scanner, digital camera, digital vidicon, optical mouse, Keyboard, ... external power supply required10. Single chip integrated USB HUB controller with embedded proprietary processor11. Easy for use and have more ... Shenzhen Certification Technology Service Co., Ltd. STE120418413 Card Reader with USB HUB (USB 2.0 Combo), CAT-0017, HB ...