Lenovo ThinkPad L420 Hardware Maintenance Manual page 80

• "1010 Battery pack" on page 59
Attention:
• Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper
handling can cause damage and permanent loss of data.
• Before removing the drive, have the user make a backup copy of all the information on it if possible.
• Never remove the drive while the computer is operating or is in suspend mode.
Removal steps of mSATA solid state drive
1
Note: Loosen the screw , but do not remove it.
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Hardware Maintenance Manual