Lenovo Intel PRO/Wireless 3945ABG Mini-PCI Express Adapter 54Mbit/s networking card

The Intel PRO/Wireless 3945ABG Mini-PCI Express Adapter can upgrade
select wireless-upgradable ThinkPad models to the latest Intel Wireless LAN technology. In addition to offering high performance, this Wi-Fi adapter card is compatible with Access Connections (a Lenovo ThinkVantage technology), which can automatically manage all wired and wireless networking connections. Wireless security is important, and the Intel Adapter supports many encryption protocols, making connection to corporate networks both easy and secure.