The Sabrent PCI-802N Wireless PCI 802.11n Adapter 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 the greatest distance using the included dual-band articulate dipole antennas. Simply install the PCI card into an available PCI slot, and connect to an available Wireless Network. (Reverse compatible with 802.11g and 802.11b)