... .Fashionable models 4.Professional manufacturer 5.Promotinal gift USB HUB ,4 port USB HUB,USB hub manufacturer. Description: 1) USB2.0 HUB ... data transfer rate 1.5/12/480Mbps3) Supports up to 127 USB devices4) Extensively compatible with scanner, digital camera, digital ... proprietary processor6) 4 ports, and power up to 500mA each port7) USB bus power Supply ,No external power supply required8 ...