Replacement procedure
1. Remove the computer cover. See "Computer cover" on page 43.
2. Remove the front bezel. See "Front bezel" on page 44.
3. Remove the drive bay assembly. See "Drive bay assembly" on page 47.
4. Remove the M.2 solid-state drive and heat sink (if any). See "M.2 solid-state drive and heat sink" on
page 53.
5. Remove the M.2 solid-state drive bracket.
6. Install the M.2 solid-state drive bracket.
7. Reinstall all the removed parts. Then, reconnect the power cord and all disconnected cables to the
computer.
Memory module
Prerequisite
Before you start, read Appendix A "Important safety information" on page 73 and print the following
instructions.
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M90s User Guide