HPE ProLiant DL345 Gen11 Service And Maintenance Manual page 144

2. If installed, open the cable management arm.
3. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
4. Disconnect all peripheral cables from the server.
5. Remove the server from the rack .
6. Place the server on a flat, level work surface.
7. Remove the access panel .
8. Do one of the following:
a. Remove the air baffle .
b. Remove the midplane drive cage .
9. Disconnect the riser cable from the system board.
10. Remove the riser cage.
11. Remove the expansion card .
Replacing the base riser from the three-slot primary riser cage Replacing the base riser from the three-slot primary riser cage
12. Remove the base riser from the riser cage.
HPE ProLiant DL345 Gen11 Server Service and Maintenance Guide 144