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20 Specifications
Controls and Lights
Front of computer:
Power button
push button
Power light
blue light — Blinking blue in sleep state; solid blue
for power-on state
amber light — The blinking amber indicates a
problem with the system board. A solid amber light
when the system does not boot indicates that the
system board cannot start initialization. This could be
a system board or a power supply problem (see "Power
Problems" on page 35).
Hard-drive activity light
blue light — A blinking blue light indicates hard-drive
activity.
Rear of computer:
Link integrity light (on the
integrated network adapter)
green light — A good connection exists between
a 10-Mbps network and the computer.
orange light
— A good connection exists between
a 100-Mbps network and the computer.
yellow light
— A good connection exists between a
1-GB (1000-Mbps) network and the computer.
off (no light)
— The computer is not detecting a
physical connection to the network.
Network activity light (on
the integrated network
adapter)
yellow blinking light when there is activity on the
network; if there is no network activity, the light will
be off
Standby power light AUX_PWR_LED on the system board
book.book Page 20 Monday, September 22, 2008 1:55 PM