122 Appendix
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Connectors
External connectors:
Serial two 9-pin connectors; 16550C-
compatible
Parallel 25-hole connector (bidirectional)
Network adapter 10/100/1000 Ethernet connector
PS/2 (keyboard and mouse) 6-pin mini-DIN
USB two front-panel and six back-panel USB
2.0–compliant connectors
headphones one front-panel connector
System board connectors:
Primary IDE drive 40-pin connector
Secondary IDE drive 40-pin connector
Floppy drive 34-pin connector
Fans (3) 3-pin connector
I/O Panel 34-pin connector
Serial ATA (2) 7-pin connector
Controls and Lights
Power control push button
Power light green light on power button—blinking
green in sleep state; solid green for
power-on state
Hard-drive access light green
Link integrity light (on integrated
network adapter)
green light for 10-Mb operation; orange
light for 100-Mb operation
Activity light (on integrated network
adapter)
yellow blinking light
Diagnostic lights four lights on the back panel
G0550bk1.book Page 122 Thursday, July 10, 2003 1:55 PM
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