Lenovo ThinkPad T40 Series Manual page 46

Removing and replacing a FRU
IBM Dual-Band 11a/b Wi-Fi Wireless Mini PCI Adapter
Plug the gray antenna cable with the tab marked MAIN
into jack MAIN, and the black antenna cable with the tab
marked AUX into jack AUX.
IBM 11a/b/g Wireless LAN Mini PCI Adapter
Plug the gray antenna cable with the tab marked MAIN
into jack MAIN, and the black antenna cable with the tab
marked AUX into jack AUX.
Insert the notched end of the card into the socket, and
then press the card firmly. Pivot the card until it snaps into
place. Make sure that it is firmly fixed in the slot and does
not move easily.
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MT 2373/2374/2375/2376/2378/2379