Lenovo ThinkPad R500 Hardware Maintenance Manual page 82

Table 17. Removal steps of PCI Express Mini Card for wireless LAN (continued)
3
When installing:
In models with wireless LAN card that has two antenna connectors, 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 protection tube.
In models with wireless LAN card that has three antenna connectors, plug the
gray cable (MAIN) into the jack labeled TR1, the white cable (3rd) into jack
labeled R0 or TR3, and the black cable (AUX) into jack labeled TR2 on the card.
74
ThinkPad R500 (15.4-inch widescreen) Hardware Maintenance Manual