Promotional gift usb 4 port usb hub 1.ROHS,CE , FCC 2.Oem 3.Customized Package 4.High speed Promotional gift usb 4 port usb hub Specification:1. USB2 ... with scanner, digital camera,keyboard, Mouse, display, U disk,4. USB bus power Supply ,No external power supply required5. Truly plug ... rare circumstance when connecting a power hungry device. This USB 2.0 device is backwards compatible so that it will ...