IBM ThinkPad T40 Hardware Maintenance Manual page 89

Removing and replacing a FRU
When installing: Plug in the wireless antenna cable as
follows:
®
Intel PRO/Wireless LAN 2100 3B Mini PCI Adapter
Plug the gray antenna cable with the tab marked MAIN
into jack M, and the black antenna cable with the tab
marked AUX into jack A.
Cisco Aironet Wireless 802.11b
Plug the gray antenna cable with the tab marked MAIN
into jack M, and the black antenna cable with the tab
marked AUX into jack A.
MAIN AUX
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ThinkPad T40 Series