Compatible with 802.11g/b devices, W311Ma is a wireless high gain USB Adapter with wireless transmission rate 3 times faster than 802.11g devices.The W311Ma connects your desktop or notebook computer with an available USB port to your wireless network for Internet access and file sharing. Desktop users can easily add wireless connectivity without having to open the PC case. Laptop users can easily upgrade to the latest 802.11n and get better range with its high power external antenna In addition, the wireless adapter supports advanced WPA/WPA2 security modes that ensure you will be able to share files and surf Internet within a secured connection.