HP ProLiant DL560 Gen11 User Manual page 53

9. Disconnect all cables from the processor mezzanine board.
Removing the processor mezzanine tray in the air cooling configuration Removing the processor mezzanine tray in the air cooling configuration
10. Remove the fan cage.
11. Remove the processor mezzanine tray from the server.
Removing the processor mezzanine tray in the liquid cooling configuration Removing the processor mezzanine tray in the liquid cooling configuration
12. Remove the fan cage groove cover.
HPE ProLiant DL560 Gen11 Server User Guide 53