HPE ProLiant ML350 Gen11 User Manual page 121

11. Make sure that any switches or jumpers on the expansion card are set properly.
For more information, see the documentation that ships with the expansion card option.
12. Install the expansion card.
13. Install the stabilizer bracket to secure the expansion card:
a. Press down the stabilizer bracket onto the expansion card (callout 1).
b. Tighten the captive screw (callout 2).
HPE ProLiant ML350 Gen11 Server User Guide 121