MDTC-E001 usb 2.0 hub 1,4 ports USB2.0/1.1, 2,No driver required,plug and play,support hot ... 4 ports usb 2.0 hub Feature Extend 4 USB ports,each supplies power 500mA (max.); USB 2.0 high speed transfer port, compatible USB 1.1 ... , protect your computer and device from damaging. Internal USB line LED will flash to indicate the operation statusStandardsFCC, ... of the color. MDTC-E001 4 ports usb 2.0 hub