The Linksys Wireless-G PCI Adapter installs in most desktops and lets you put your computer almost anywhere in the building without the cost and hassle of running network cables. Now you don t have to drill holes in your walls and climb through the attic or cellar to get connected to the network. Once you re connected you can keep in touch with your e-mail access the Internet use instant messaging to chat with friends and share files and other resources such as printers and network storage with other computers on the network. The Wireless-G PCI Adapter connects you with Wireless-G networks at an incredible 54Mbps! And for added versatility it can also interoperate with all the 11Mbps Wireless-B (802.11b) products found in homes businesses and public wireless hotspots around the country. And in either mode your wireless communications are protected by up to 128-bit encryption so your data stays secure.