Lenovo ThinkEdge SE455 V3 User Manual page 131

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.
About this task
Attention:
• Read "Installation Guidelines" on page 39
work safely.
• If applicable, remove the security bezel. See
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
"Power off the server" on page
• If the server is installed in a rack, remove the server from the rack. See
on page 49.
Procedure
Step 1. Make preparation for this task.
a. Remove the top cover. See
b. Remove the M.2 backplane assembly. See
121.
Step 2. Locate the M.2 drive to be removed.
Figure 94. M.2 drive slot numbering
M.2 Bay 0 / Slot 1
1
Step 3. Remove the M.2 drive.
a. Press both sides of the retainer
b. Slide the retainer away from the M.2 drive.
c. Lift the rear end of M.2 drive up.
d. Pull the M.2 drive away from the slot
and "Safety inspection checklist" on page 40
"Remove the security bezel" on page
48.
"Remove the top cover" on page
"Remove the M.2 backplane assembly" on page
.
2
.
1
"Remove the server from the rack"
223.
M.2 Bay 1 / Slot 2
1
.
Chapter 5 Hardware replacement procedures
to ensure that you
195.
123