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176 Appendix
System board connectors:
Serial ATA
five 7-pin connectors
FlexBay
2 port USB header
uDOC
1 port USB header
LCD
Dell proprietary USB based LCD header
Fan
two 5-pin connectors
PCI
three 124-pin connectors
PCI Express x1
36-pin connector
PCI Express x16
164-pin connector
PCI Express x4/x8
98-pin connector
Controls and Lights
Power control push button
Power light blue light — Blinking blue in sleep state; solid blue
for power-on state.
amber light — Blinking amber indicates a problem
with an installed device; solid amber indicates an
internal power problem.
Hard-drive access light blue light — Blinking blue denoting hard drive
activity state.
Network activity light (front
panel)
solid blue indicates network connection.
Link integrity light (on
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.
Connectors (continued)
book.book Page 176 Tuesday, November 27, 2007 10:29 AM