Hard Disk Drive; Optical Drive - Lenovo ThinkCentre M90a Pro Gen4 Hardware Maintenance Manual

Hard disk drive

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and
permanent loss of data. When handling the internal storage drive, observe the following guidelines:
• Replace the internal storage drive only for upgrade or repair. The internal storage drive is not designed for
frequent changes or replacement.
• Before replacing the internal storage drive, make a backup copy of all the data that you want to keep.
• Do not touch the contact edge of the internal storage drive. Otherwise, the internal storage drive might get
damaged.
• Do not apply pressure to the internal storage drive.
• Do not make the internal storage drive subject to physical shocks or vibration. Put the internal storage
drive on a soft material, such as cloth, to absorb physical shocks.
For access, remove the following parts in order, if any:
• "Computer stand" on page 51.
• "Rear I/O cover" on page 54.
• "System board shield" on page 55.
• "VESA mount bracket" on page 57.
• Disconnect the signal cable and the power cable from the storage drive.
Removal procedure

Optical drive

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
For access, remove the following parts in order, if any:
.
Chapter 6 Hardware removal and installation
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