CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current from
the device, ensure that all power cords are disconnected from the power source.
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The server can be turned off in any of the following ways:
v You can turn off the server from the operating system, if your operating system
supports this feature. After an orderly shutdown of the operating system, the
server will turn off automatically.
v You can press the power-control button to start an orderly shutdown of the
operating system and turn off the server, if your operating system supports this
feature.
v If the operating system stops functioning, you can press and hold the
power-control button for more than 4 seconds to turn off the server.
v The server can be turned off by Wake on LAN feature with the following
limitation:
– To install any PCI adapter, the power cords must be removed from the power
source before you remove the PCI Express riser assembly and the PCI-X riser
assembly. Otherwise, this will cause the active power management event
signal to become disabled by the system board logic and Wake on LAN might
not work. However, after the server is powered-on locally, the active power
management event signal will be enabled by the system board logic.
v The integrated management module (IMM) can turn off the server as an
automatic response to a critical system failure.
34 IBM System x3550 M3 Type 4254 and 7944: Installation and User's Guide
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