HP ProLiant DL585 Server - Manual (Page 58)

Installing hardware options
HP ProLiant DL585 Server User Guide 4-7
8. Attach the front foam piece to the Velcro on the side wall of the chassis.
Figure 4-6: Attaching the front foam piece to the Velcro
9. Remove the rear fan cage.
Figure 4-7: Removing the rear fan cage