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170 Appendix
Front panel audio HDA
header
one 10-pin connector
Processor
one 940-pin connector
Memory
four 240-pin connectors
Power 12V
one 4-pin connector
Power
one 24-pin connector
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 70).
Drive activity light
blue light — A blinking blue light indicates the
computer is reading data from or writing data to the
SATA hard drive, CD, DVD or HDD.
Rear of computer:
Link integrity light (on
integrated network adapter)
green light — A good connection exists between the
network and the computer.
off (no light) — The computer is not detecting a
physical connection to the network.
Network activity light (on
integrated network adapter)
yellow blinking light
Connectors (continued)
book.book Page 170 Wednesday, April 16, 2008 3:33 PM