Apple Xserve (Early 2009) - Manual (Page 28)

28 Chapter 2 Installing or Replacing Components
Installing or Replacing a Power Supply
You can install or replace a power supply from the back panel without removing the
Xserve from the rack. If the Xserve has two power supplies, they are hot-swappable;
the Xserve continues to operate using only one supply while the second is removed.
Important: Install power supplies with a rating of at least 750 watts. The power supplies
from some earlier Xserves are rated at less than 750 watts.
To remove a power supply:
1 Unplug the power cord from the power supply you are removing.
2 Pull the handle to release the power supply and slide it out of the bay.
WARNING: The power supplies in a running Xserve might be hot.
Pull the handle to unlatch the
power supply and remove it.
To add a second power
supply, use the notch in the
power supply bay cover to
rotate the cover outward.
Remove and save the cover.