IBM ThinkPad T40 Series User Manual page 10

ii) Installation of approved wireless modules
If no integrated wireless LAN Mini-PCI Card or RF CDC module is preinstalled in your ThinkPad
computer, you can install one, provided by IBM as an option. Plug the wireless card option into the
Mini-PCI Card slot or CDC slot located under the keyboard of your ThinkPad computer as shown on
the next page.
ThinkPad T40 Series 14-inch model
ThinkPad T40 Series 15-inch model
Attention: The ThinkPad T40 Series computer contains an authentication mechanism
If you install an unauthorized wireless LAN Mini-PCI Card or RF CDC module that is not approved for
use in the ThinkPad T40 Series computer, the computer will not start, but only displays an error
message and emits beeps.
5
USA — Federal Communications Commission (FCC)