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About Your System 17
Figure 1-9. Enumeration—Four System Boards
Figure 1-10. Enumeration—Three System Boards
9 Video connector Connects a VGA display to the system.
10 Power-on indicator/
power button (system
board 1)
The power-on indicator lights
when the system power is on.
The power button controls the
DC power supply output to the system.
NOTE: When powering on the system,
the video monitor can take from several
seconds to over 2 minutes to display an
image, depending on the amount of
memory installed in the system.
NOTE: On ACPI-compliant operating
systems, turning off the system using the
power button causes the system to
perform a graceful shutdown before
power to the system is turned off.
NOTE: To force an ungraceful shutdown,
press and hold the power button for
five seconds.
Item Indicator, Button,
or Connector
Icon Description
3
4
1
2
4
1
2
book.book Page 17 Thursday, March 4, 2010 4:38 PM