Lenovo ThinkPad T61 Hardware Maintenance Manual page 79

When installing:
v In models with 802.11 a/b/g wireless LAN card, plug the gray cable into the
jack labeled MAIN on the card, and the black cable into the jack labeled AUX. If
the computer you are servicing has three cables, put the white cable in the cable
bag in the card slot.
v In models with 802.11 a/b/g/n wireless LAN card, plug the gray cable (MAIN)
into the jack labeled TR1, the white cable (3rd) into jack labeled R0, and the
black cable (AUX) into jack labeled TR2 on the card.
ThinkPad T61, R61, and R61i (14.1-inch widescreen)
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