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Appendix 129
Connectors
External connectors:
IEEE 1394 front and back-panel 6-pin serial connectors
Network adapter RJ45 connector
PS/2 (keyboard and mouse) two 6-pin mini-DIN
Serial 9-pin connector
USB two front-panel, six back-panel, and two internal USB 2.0–compliant
connectors
System board connectors:
IDE drive one 40-pin connector
Serial ATA four 7-pin connectors
Floppy drive 34-pin connector
Fan four 5-pin connectors
PCI three 120-pin connectors
PCI Express x1 36-pin connector
PCI Express x16 two 164-pin connectors
Controls and Lights
Power control push button
Power light green light — Blinking green in sleep state; solid green for power-on
state.
amber light — Blinking amber indicates a problem with an installed
device; solid amber indicates an internal power problem (see "Power
Problems" on page 49).
Hard-drive access light green
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
(or 1000-Mbps) network and the computer.
off (no light)
— The computer is not detecting a physical
connection to the network.
Activity light (on integrated network
adapter)
yellow blinking light when there is activity on the network. If there is
not any network activity, the light will be off.
Diagnostic lights four lights on the front panel (See "Diagnostic Lights" on page 55.)