ThinkPad L412 WLAN Card Replacement

Turn the laptop over.

Remove the battery, and make sure the device has no power.

Then, with a J00 screwdriver, loosen the screws. Make sure the screws don't fall out!

Then, use the opening tool to carefully open the lid (your fingernail can also work too).

Next, unscrew the two screws. Then, carefully use tweezers to remove the two cables from the connectors.

Now, remove the WLAN card.

Next, install the new card, re-attach the cables to the connectors, and screw the two screws back into place.

Then, carefully set the lid back into place and screw the screws back in. Now, finally insert the battery and lock it back into place.