Chapter 3. Product information 63
Here we describe the components in the diagram:
3V battery error LED: When this LED is lit, it indicates that a Standard I/O Book battery
error has occurred.
I/O board error LED: When this LED is lit, it indicates that an error has occurred on the
Primary I/O Book board.
System-error LED: When this LED is lit, it indicates that a system error has occurred. An
LED on the front operator panel is also lit to help isolate the error. This LED is functionally
equivalent to the system-error LED on the front of the server.
Locate LED: Use this LED to visually locate the server among other servers. You can use
IBM Systems Director to light this LED remotely. IMM can also be used to turn this LED on
and off. This LED is functionally equivalent to the locate LED on the front of the server.
NMI button: Press this button to force a nonmaskable interrupt to the microprocessor. You
might have to use a pen or the end of a straightened paper clip to press the button. You
can also use it to force a blue-screen memory dump. Use this button only when you are
directed to do so by IBM Support.
Serial connector: Connect a 9-pin serial device to this connector. The serial port is
shared with the integrated management module (IMM). The IMM can take control of the
shared serial port to redirect serial traffic, using Serial over LAN (SOL).
Systems-management Ethernet connector: Use this connector to manage the server,
by using a dedicated management network. If you use this connector, the IMM cannot be
accessed directly from the production network. A dedicated management network
provides additional security by physically separating the management network traffic from
the production network. You can use the Setup utility to configure the server to use a
dedicated systems-management network or a shared network.
USB 2.0 connectors: Connect a USB device, such as a USB mouse, keyboard, or other
device, to any of these connectors.
Video connector: Connect a monitor to this connector. The video connectors on the front
and rear of the server can be used simultaneously.
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