Product information: AirPlus DWL-520+ Enhanced 2.4GHz Wireless PCI AdapterThe D-Link AirPlus DWL-520+ is an enhanced speed wireless network PCI card for desktop PCs. This card connects you to a 2.4GHz wireless LAN, giving you fast, secured mobile access to the network. It provides enhanced transmission speeds at up to 22Mbps, industry standard interoperability, strong 256-bit data security and ease of use for desktop PC users requiring fast, secure wireless network connection. The DWL-520+ is equipped with an SMA reverse detachable dipole antenna with an effective range of 100meters indoors, or 400 meters outdoors. Where a longer range is required, you can easily remove this antenna and replace it with a higher Gain antenna.