Removing and installing Customer
Replaceable Units (CRUs)
The replaceable components in this chapter are Customer Replaceable Units (CRUs).
CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions
and replacement procedures.
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
SIM card tray
Removing the SIM card tray (Optional)
Prerequisites
1. Follow the procedure in Before working inside your computer.
NOTE: The procedure for SIM card tray removal is only applicable for computers that are shipped with a WWAN module.
CAUTION: Removing the SIM card when the computer is turned on might cause data loss or damage to the card.
Ensure that your computer is turned off or the network connections are disabled.
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42 Removing and installing Customer Replaceable Units (CRUs)
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