Apple Xserve (Early 2008) DIY Procedure for Enclosure - Manual (Page 168)

Xserve (Late 2006/Early 2008) Rear ID Tab Replacement Instructions 27
Replacing the PCI Riser Cards and Expansion Cards
Align the riser with slot 1 on the logic board and press to seat the card. 1.
Tighten the captive screws that secure the riser bracket to the back panel. 2.
Repeat for the riser in slot 2. 3.
Replacing the Power Supplies
Slide the first power supply all the way into the bay, and then press the handle to seat the 1.
power supply and lock it in place.
Slide the power supply in and
press the handle to seat it.
Repeat for the second power supply, if installed. 2.
Closing the Xserve
Replace and secure the cover. 1.
Slide the Xserve back into the rack, and tighten the front thumbscrews to secure the Xserve 2.
in the rack.
If the server case was locked, use the enclosure key to lock the security lock on the front 3.
panel.