Specification:USB2.0 Broad Band Ethernet 10-100Mbs and USB to 10/100 Fast Ethernet Adapter provides Plug-and-play 10/100Mbps dual Speed Ethernet connection for PCS,notebooks and laptops This device complies with USB specifications 1.0 and 1.1 and uses a USB type A connector to connecter to the USB host device drowse power from the USB host bus, therefore no external power supply is requiredDimensions:77.7*21.4*19.6MMSpeed: 480MBps payment:T/T