IBM System x3650 M4 Type 7915 Installation And User Manual page 47

Note: When you install any PCI adapter, the power cords must be disconnected
from the power source before you remove the PCI Express riser-card assembly
and the PCI-X riser-card assembly. Otherwise, the Wake on LAN feature might
not work.
v The integrated management module II (IMM2) can turn off the server as an
automatic response to a critical system failure.
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Chapter 1. The System x3650 M4 server