HP ProLiant DL380 G7 Maintenance And Service Manual page 29

Remove the cable arm retainer.
1.
Open the cable management arm.
2.
Cable management arm with right-hand swing
NOTE:
To access the product rear panel components, open the cable management arm:
Power down the server (on page 26).
1.
Swing open the cable management arm.
2.
Remove the cables from the cable trough.
3.
To access some components, you may need to remove the cable management arm.
Removal and replacement procedures 29