1)USB 2.0 male A to RJ45 female adapter  supporting 10/100

2)Supports backpressure routing and IEEE 802.3x flow control for full-duplex (FDX) and half-duplex (HDX) systems. 

3)Supports crossover detection and auto-correction and Wake-on-LAN (WOL). 

4)Powered via USB - no external power adapter needed, automatically saves power when Ethernet cable is unplugged. 

5)Supports Windows 2000 / XP / Vista / 7 / 8(32/64-bit), Mac OS 9 or higher