Replacing The Solid State Drive; Before You Start, Print These Instructions; Prerequisites For The Procedure - Lenovo ThinkPad T420si User Manual

4. Find the SIM card slot inside the open battery compartment. Gently pull the card partway out of the slot
(1). Remove it completely (2).
5. Insert the SIM card firmly into the slot.
6. Put the battery back in place, turn the computer over again, and reconnect the cables. For more
information about how to reinstall the battery, refer to "Replacing the battery" on page 97.

Replacing the solid state drive

Before you start, print these instructions.

You can replace the solid state drive with a new one which can be purchased from your Lenovo reseller or a
marketing representative. To replace the solid state drive, read the following prerequisites and select your
model from the list below for instructions.
Note: Replace the solid state drive only if you need to have it repaired. The connectors and slot of the solid
state drive were not designed for frequent changes, or drive swapping.

Prerequisites for the procedure

When replacing the drive, be sure to follow the precautions.
Attention: When you are handling a solid state drive:
124
User Guide