Lenovo ThinkSystem ST250 V2 Maintenance Manual page 154

• S002
CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off
the electrical current supplied to the device. The device also might have more than one power cord.
To remove all electrical current from the device, ensure that all power cords are disconnected from
the power source.
Attention:
• Read the "Installation guidelines" on page 85 to ensure that you work safely.
• Turn off the server and peripheral devices, and disconnect the power cords and all external cables (see
"Power off the server" on page 13).
• If the server is in a rack, remove it from the rack.
• Remove any locking device that secures the server cover, such as a Kensington lock or a pad lock.
Watch the procedure
A video of this procedure is available at YouTube:
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Procedure
Step 1. Before adjusting the retainer on the M.2 boot adapter, locate the correct keyhole that the retainer
should be installed into to accommodate the particular size of the M.2 drive you wish to install.
Note: The M.2 boot adapter might be different from the following illustrations, but the adjustment
method is the same.
Step 2. Adjust the retainer on the M.2 boot adapter.
Figure 76. Adjusting the M.2 retainer
a. Press both sides of the retainers.
b. Move the retainer forward until it is in the large opening of the keyhole.
c. Take the retainer out of the keyhole.
d. Insert the retainer into the correct keyhole to accommodate the particular size of the M.2
drive you wish to install.
e. Press both sides of the retainer.
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https://youtube.com/playlist?list=PLYV5R7hVcs-
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