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PCI Express Mini Card for Wireless LAN removal and installation - ThinkPad X300

For access, remove these FRUs in order:

  1. Remove battery.
  2. Loosen the screws 1, but do not remove them.

PCI Express1

PCI Express2

  1. In step (3), unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159) or pick the connectors with your fingers and gently unplug them in direction of the arrow.
  2. Note: Some models might have only two antenna cables in step (3).
PCI Express3

StepScrew (quantity)ColorTorque
4M2 × 3 mm, small-head, nylon-coated (2)Silver0.167 Nm(1.7 kgfcm)

PCI Expres4

When installing:

  • 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.
  • 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.
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