D-Link AirXpert DWL-AG520 Wireless PCI Adapter

From D-Link:

D-Link AirXpert DWL-AG520 Wireless PCI Adapter: If you´re a network administrator, the versatile 802.11a/b/g-compatible DWL-AG520 gives you an immediate way to expand to your existing 802.11b network and protect your overall wireless network investment. By installing DWL-AG520s in desktops throughout your organization your employees can access wireless APs or routers from their desktop PCs. And as your company expands or reorganizes you won´t have to keep pulling and plugging Ethernet cable because no matter where the workstation is relocated, it´s still connected to the network. When you add an 802.11a/b/g access point (D-Link Air Xpert DWL-7000AP) or router (D-Link Air Xpert DI-774), to your wireless network, you will have an end-to-end wireless solution capable of handling up to four times the user load of your current 802.11b network.

In addition to its compatibility with earlier 802.11b networks, the DWL-AG520 now offers the robust speed with a maximum wireless signal rate of up to 54Mbps, of the newer 802.11g and 802.11a standards, so everyone can work faster and more efficiently. The additional (802.11a) 5GHz band also offers a way to quickly transfer data in a frequency range that does not experience interference or interruptions from cordless phones, microwave ovens and other devices utilizing the 2.4GHz frequency.