Intel PRO/Wireless 2915ABG Mini-PCI Adapter 802.11a/b/g for ThinkPad X31 X40 T40 T41 Chipset: Intel 2915 IEEE Standards: 802.11a, 802.11b, 802.11g The Intel PRO/Wireless 2915ABG1 Mini-PCI Adapter provides secure wireless connectivity2 with maximum flexibility and performance for wireless-upgradable ThinkPad notebooks. This Mini-PCI adapter is based on three Wireless LAN (WLAN) standards: IEEE 802.11a, 802.11g, and 802.11b. It offers data rates up to 54 Mbps3 in both the 2.4 GHz4 and 5 GHz bands.