Cisco-Linksys USB200M EtherFast USB 2.0 10/100 Network Adapter (Not compatible with Windows 8) Product Type - Adapter One RJ-45, 10/100 Port for Network Connectivity Powered by Host PC so No External Power Supply is Needed Compact DesignPerfect for Use with Notebook PCs RJ-45 Network Port Connects to Any 10/100Mbps Hub or Switch Not compatible with Windows 8