For access, remove these FRU:
Note: Loosen the screw , but do not remove it.
Please perform the following step as shown in the picture below.
Some models of ThinkPad SL410, L410, SL510, and L510 might have the SIM card that the customer has been installed.
If the computer you are servicing has the SIM card, remove it before you start the servicing.
After you finish the servicing, make sure that you insert the card back into the slot firmly.