Lenovo ThinkPad X300 Hardware Maintenance Manual page 76

Table 15. Removal steps of PCI Express Mini Card for wireless LAN (continued)
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ThinkPad X300 Hardware Maintenance Manual
When installing:
v In models with 802.11 a/b/g wireless LAN card, plug the gray cable into the
jack labeled MAIN, and the black cable into the jack labeled AUX on the card.
If the computer you are servicing has three cables, put the white cable in the
cable holder.
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.