IBM Intel PRO/Wireless 2200BG Mini-PCI Adapter Mini PCI adapter based on IEEE 802.11g and 802.11b Offers secure, flexible wireless connectivity for wireless-upgradeable IBM ThinkPad notebooks Data transfer rates of up to 54 Mbps in the 2.4 GHz band 1 to 54 Mbps for 802.11g; 1 to 11 Mbps for 802.11b Seamless roaming and manual selection mode for both standards