LINFOX Long Range High Power 58DBI USB Clipper Wireless Wifi Adapter Antenna (3KM,5800MW) The Wifi Wireless Adapter adopts distance coverage technology, with built-in high gain antenna easily advances your distance and performance. It fully supports the features and functional compliance of IEEE 802.11b/g. You can just plug it into computers USB port and enjoy incredible high-speed wireless network access 58dBi directional high gain antenna, high sensitivity long range Range over 500-800M(indoor) / 3KM(outdoor) with connection Ralink 3070 chipset.Data rate: 802.11b: 11Mbps 802.g:54Mbps