Apple Xserve Intel (Late 2006) DIY Procedure for Logic Board - Manual (Page 4)

Xserve (Late 2006) Logic Board Replacement Instructions 
Power Supplies
Pull the handle to release the first power supply and slide it out of the bay.
Pull the handle to unlatch the
power supply and remove it.
Repeat for the second power supply, if installed.
PCI Riser Cards and Expansion Cards
Loosen the two captive screws that secure the riser bracket in slot 1 to the back panel.
Carefully pull up on the bracket and riser, with the expansion card still attached, to
disconnect the riser from the logic board.
Captive screws
Tilt the expansion card up so that its port clears the enclosure, and remove the card from the
Xserve.
Repeat for the riser card in slot 2.
Note: If no risers are installed, remove the blanks held in place by the same screws.
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