Lenovo ThinkPad T400s series User Manual page 24

Using WiMAX
Some ThinkPad® computers come with a built-in wireless LAN card integrating WiMAX technology.
WiMAX -- a long-range wireless data transmission technology based on the 802.16 standard -- provides you with a "last mile" broadband
connectivity similar to that offered by cable or ADSL, but without the need to physically connect a cable to the PC.
To use the WiMAX feature, start Access Connections™.
To start the Access Connections wizard, click Start --> All Programs --> ThinkVantage --> Access Connections, and follow the instructions
on the screen.