up to 5x faster and backward compatible with 802.11b wireless networks freedom of movement and flexibility of access - netgear's 54 mbps wireless pc card gives you both in spades! designed to the 802.11g specification this versatile pc card offers speeds up to nearly five times faster than widely deployed ieee 802.11b wireless networks found in homes, businesses and public wireless hotspots around the globe. frequency range: 2.4ghz encryption: 40/64bit, 128bit wep encryption ethernet: ieee 802.31 10 base-t, ieee 802.1u 100 base-tx dimensions: 120 x 54 x 7 mm weight: 40g * supports office roaming for notebook pc users for shared broadband internet access & resources. * highest available level of wep encryption 128bit for both 802.11b/802.11g * support mac address authentication, 802.1x and wpa with future firmware upgrades to ensure only authorized users can access to network * dynamic rate shifting according to environmental conditions achieves the fastest possible connections sys reqs : pentium class pc, available 32-bit cardbus slot, cd-rom drive, win 98, me, 2000, or xp