The Sabrent NT-H802N gives you the flexibility to position your Desktop PC or MAC where you want, without the cost or inconvenience of running network cables. Maximize data transfer speeds of up to 300 Mbps from as far as 800 meters with the included 7" 6dbi antenna. Simply install the USB Adapter into an available USB port, and connect to an available Wireless Network. (Reverse compatible with 802.11b/g). If you already have an internal wireless card, you can use this USB 1000mW adapter by disabling your internal card in Device Manager.