HP ProLiant DL580 Maintenance And Service Manual page 27

2. Remove the processor module ("Removing the processor module" on page
24).
3. Unlock the processor retaining bracket.
4. Open the processor retaining bracket, and open the processor locking lever.
CAUTION: Failure to completely open the processor locking lever
prevents the processor from seating during installation, leading to
hardware damage.
5. Remove the processor.
Removal and replacement procedures 27