The Airlive X.USB is a portable 300Mbps dual band 11a/b/g/n USB adapter with 2pcs of 3dBi Antenna that can connect with any WiFi network at the maximum speed. It even comes with detachable antenna design to change antennas according to the distance requirement. It is the perfect choice for low cost 5GHz WISP clients. The X.USB is capable of connecting to 5GHz and 2.4GHz WiFi networks at 300mbps. You can set it to 11a/b/g/n, 11a/n, 11b/g/n, 11b/g, 2.4GHz only, or 5GHz only mode. The Atheros chipset means perfect compatibility with outdoor AP devices. If you need an USB dongle that can connect with everyone, the X.USB is your choice.