... 4 ports usb 2.0 hub 1,4 ports 2,supports USB2.0/1.1, 3,No driver required,plug and play ... ,support hot swapping; Item NO: MDTC-E004 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 ... of the color. MDTC-E004 4 ports usb 2.0 hub