Figure 74. Installing the PCIe adapter into the chassis
Step 5.  Connect the power cable and the signal cable to the system board. See “M.2 adapter, intrusion 
switch, and RAID flash power module” on page 66.
After this task is completed
1.  Reinstall the M.2 drives to the M.2 boot adapter. See “Install an M.2 drive” on page 145.
2.  Complete the parts replacement. See “Complete the parts replacement” on page 217.
M.2 drive replacement
Follow instructions in this section to remove and install the M.2 drive.
Remove an M.2 drive
Follow instructions in this section to remove an M.2 drive.
About this task
To avoid potential danger, read and follow the following safety statements. 
•  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. 
142 ThinkSystem ST250 V2 Maintenance Manual