HP HPE ProLiant ML350e Gen8 Maintenance And Service Manual page 41

If installed, remove the PCI air baffle
6.
Open the PCI slot cover retaining bracket.
7.
Release the expansion board retaining bracket and remove the expansion board.
8.
If a full-length expansion board is installed on the fan holder, remove the expansion board.
9.
IMPORTANT: If removing an expansion board from PCI slot 2, release the retainer latch on the
system board, and then remove the expansion board from the system.
("PCI air baffle" on page 27).
Removal and replacement procedures 41