... pad ,multifunctional mouse pad, usb hub mouse pad ,new usb hub,multifunction mouse pad,promotion gift Fully compliant with the USB ... V1.1(Or USB V2.0) Single chip integrated USB Hub control with embedded proprietary processor. Supports 4 bus-powered/self ... downstream ports. Runs at 12MHz frequency. Driverless,hot plug & play,Dual Blue LED show. Support OS:Windows XP,2000,ME,98 ...