Dell Dimension C521 Service Manual page 34

card size
connector size
connector data width
(maximum)
PCI Express:
connectors
power
connector size
connector data width (maximum)
Drives
Externally accessible
Available devices
Internally accessible
Connectors
External connectors:
Video
Network adapter
USB
Audio
System board connectors:
SATA
Floppy drive
Fan
PCI 2.3
PCIe-x1
PCIe-x16
Internal USB
Speaker
Memory modules
Power 12V
Power
Battery
Controls and Lights
Power control
Power light
Hard-drive access light
LAN activity light (front panel)
Link integrity light (on integrated network adapter)
Network activity light (on integrated network
adapter)
Diagnostic lights
Standby power light
low profile
124 pins
32 bits
one x1 and one x16
10 W (x1) and 25 W (x16) maximum
36 pins (x1) and 164 pins (x16)
one PCI Express lane (x1) and 16 PCI Express lanes
(x16)
one 3.5-inch drive
one 5.25-inch drive bay
SATA hard drive, CD drive, DVD drive, DVD +/- RW
drive, and CD-RW/DVD Combo drive
one bay for a 1-inch-high hard drive
15-hole VGA connector
RJ45 connector
two front-panel and four back-panel USB 2.0–
compliant connectors
six connectors for line-in and line-out; two front-panel
connectors for headphones and microphone
two 7-pin connectors
34-pin connector
5-pin connector
124-pin connector
36-pin connector
164-pin connector
10-pin connector (supports two USB ports)
6-pin connector
four 240-pin connectors
4-pin connector
24-pin connector
2-pin socket
push button
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 System
green
solid green light indicates network connection
green light for 10-Mb operation; orange light for 100-
Mb operation
yellow blinking light
Four lights on the front panel. See
AUX_PWR on the system board
Lights).
Diagnostic Lights.