Extends any USB 2.0 peripherals up to 100" wirelessly from the USB sourceTransmits data up to 54 Mbps Works like a USB hub Designed for Windows XP/Vista Unix Linux and Mac OSX Extend any USB device up to 100" wirelessly from the USB source54 MBps maximum thru putDimensions of each sender and receiver: 4 5/16"W x 1 1/10"H x 2 11/16"DIncludes 1 USB sender 1 USB receiver 1 USB cable and 2.5V power supplies