Ethernet External USB to Lan RJ45 Network Card Adapter 10/100 Mbps for Laptop PC Integrated fast ethernet MAC,physical chip and transceiver in one chip Supports 10Mb/s and 100 Mb/s N-way Auto-negotiation operation; Compliant to USB interface version 1.0/1.1/2.0 Full-Speed(12Mb/s)USB device;