Lenovo ThinkSystem ST250 V2 Maintenance Manual page 218

A video of this procedure is available at YouTube:
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Procedure
Attention: Before install the new system board, make sure that the power supply cage has been installed
into the chassis to avoid damaging components on the system board.
Step 1. Note the orientation of the new system board, and carefully place it into the chassis. Ensure that
the serial port on the system board is inserted into the corresponding slot, and the eight screw
holes on the system board are aligned with the corresponding mounting studs on the chassis.
Figure 119. Installing the system board
Step 2. Secure the system board by tightening the eight screws in the sequence shown in the illustration.
Note: For reference, the torque required to fully tighten the screws is 0.5-0.6 newton-meters, 4.5-
5.5 inch-pounds.
ThinkSystem ST250 V2 Maintenance Manual
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https://youtube.com/playlist?list=PLYV5R7hVcs-
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