Dell Dimension C521 - Manual (Page 95)

Appendix
95
Connectors
External connectors:
Video 15-hole VGA connector
Network adapter RJ45 connector
USB two front-panel and four back-panel USB 2.0–compliant
connectors
Audio six connectors for line-in and line-out; two front-panel connectors
for headphones and microphone
System board connectors:
SATA two 7-pin connectors
Floppy drive 34-pin connector
Fan 5-pin connector
PCI 2.3 one 124-pin connectors
PCIe-x1 36-pin connector
PCIe-x16 164-pin connector
Internal USB 10-pin connector (supports two USB ports)
Speaker 5-pin connector
Memory modules four 240-pin connector
Power 12V 4-pin connector
Power 24-pin connector
Battery 2-pin socket
Controls and Lights
Power control push button
Power light green light — Blinking green indicates a sleep mode; solid green
indicates a 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 40).
Hard-drive access light green
Link light solid green light indicates network connection
Link integrity light (on integrated
network adapter) green light for 10-Mb operation; orange light for 100-Mb operation