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1. Turn off the computer and remove all connected devices and cables.
2. Unlock any locking device that secures the computer cover.
3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the computer cover is facing up.
4. Remove the computer stand, if any. See "Computer stand" on page 36.
Removal procedure
Note: Some computer models might not be shipped with a serial connector module. In this case, remove
the dummy cover for serial connector module first.
System board shield
Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
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M90a Pro Gen4 User Guide
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