Product Specificationssupport 10Mbps and 100Mbps N-way auto-negotiation operation.Interated fast ethernet Mac, p[hysical clip and rtansceiver in one chip.poweres by USB port, and also can connect external power.Support both full-duplex and half-duplex operations.Compliant with IEEE 802.3 (10Based-T) and 802.3u (100Base-TX) stadars.Copliant with USB interface version 1.1/1.1/2.0Expand three hi-speed usb2.0 port to connect usb devices.No need driver in Mac OS.Compiant with Windows7, Mac OS X.