... 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. USB2.0 HUB ... with scanner, digital camera,keyboard, Mouse, display, U disk,4. USB bus power Supply ,No external power supply required5. Truly plug ... 480Mbps. Perfect for both the mobile and desktop user.The hub works perfectly without external power, a compact, multi-voltage AC ...