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Technical Overview: Dell™ Dimension™ 8100 System Reference
Back-Panel Features
 |
| 1 |
Parallel connector |
| 2 |
Serial connector |
| 3 |
Keyboard connector |
| 4 |
USB connectors (2) |
| 5 |
USB connectors (2) |
| 6 |
AC power receptacle |
| 7 |
Mouse connector |
| 8 |
NIC connector
(present only on systems with built-in network capabilities) |
| 9 |
Video connector |
| 10 |
Padlock ring |
|
System Board Connectors and Sockets
 |
| 1 |
CPU power connector |
| 2 |
Parallel port connector |
| 3 |
Serial port connector |
| 4 |
Microprocessor fan connector |
| 5 |
Microprocessor
and heat sink |
| 6 |
Keyboard and
mouse and connectors |
| 7 |
Diagnostic LEDs |
| 8 |
USB connectors (2) |
| 9 |
NIC (present
only on systems with built-in network capabilities) and USB connectors (2) |
| 10 |
VRM connector |
| 11 |
AGP connector (some AGP connectors have an AGP card clip) |
| 12 |
PCI card connectors (5) |
| 13 |
System power connector |
| 14 |
Floppy drive connector |
| 15 |
RIMM sockets (4) |
| 16 |
Primary EIDE connector |
| 17 |
Secondary EIDE connector |
| 18 |
Control panel connector |
| 19 |
Auxiliary hard-drive
LED-indicator connector |
| 20 |
Battery socket |
|
| Jumper |
Setting |
Description |
| PSWD |
 (default) |
Password features are enabled. |
 |
Password features are disabled. |
| RTCRST |
 |
Real-time clock reset (can be used for
troubleshooting). |
 jumpered  unjumpered |
| HINT: The Glossary defines abbreviations and acronyms. |
 |
| 1 |
Heat sink |
| 2 |
Microprocessor |
|
The 423-pin socketed microprocessor, shown in the previous illustration with
the heat sink attached, includes the following features:
- Intel® Pentium® 4 microprocessor with
integrated 8-KB first-level cache
- Secondary (L2) cache with integrated 256-KB at full processor speed
- Associated circuitry
The socketed microprocessor inserts into the ZIF connector mounted
on the system board. A clip
secures the heat sink to the connector.
| EIDE Channel |
EIDE Connector Location |
Dell-Installed Drive |
| Primary EIDE master |
End connector on PRI IDE connector cable |
Hard drive |
| Secondary EIDE master |
End connector on SEC IDE connector cable |
CD drive or DVD drive |
| Secondary EIDE slave |
Middle connector on SEC IDE connector cable |
CD-RW drive |
| HINT: The Glossary defines abbreviations and acronyms. |
Power Supply
The power supply can operate from an AC power source of 115
Volts AC (VAC) at 60 Hz or 230 VAC at 50 Hz. The power supply provides the DC operating
voltages and currents listed in the following table.
 |
HINT:
The power supply produces DC voltages only under its loaded condition. The DC power
cable connectors must be connected to their corresponding power input connectors on the
system board or drives in order to measure these voltages. |
| Output Voltage |
Regulation |
Min. Current (Amps) |
Max. Current2
(Amps) |
| +12 VDC |
±5% |
0.0 |
18.0 |
| +5 VDC |
±5% |
1.0 |
28.0 |
| +3.3 VDC |
±5% |
0.1 / 0.01 |
18.0 |
| - |
- |
- |
- |
| –12 VDC |
±10% |
0.0 |
0.3 |
| +5 VFP |
±5% |
0.0 |
1.2 |
| HINT:
The Glossary defines abbreviations and acronyms. |
1 In system
applications where +3.3 VDC is not used, all other outputs stay within regulation while
the +3.3 VDC output is in zero-load condition.
2 Maximum continuous combined load on +5 VDC and +3.3 VDC
outputs will not exceed 200 W.
DC Power Cables
DC Power Connector
Pin Assignments
The power-supply output voltages can be measured at the back (wire
side) of the DC power connectors without disconnecting them.
The following figure shows the P1 DC power connector.
| 1 |
+5 VDC (red) |
13 |
PSON#2 (gray) |
| 2 |
Common (black) |
14 |
Common (black) |
| 3 |
+5 VDC (red) |
15 |
Common (black) |
| 4 |
Common (black) |
16 |
Common (black) |
| 5 |
PWRGOOD1 (orange) |
17 |
N/C |
| 6 |
+5 VFP (purple) |
18 |
+5 VDC (red) |
| 7 |
+12 VDC (yellow) |
19 |
+5 VDC (red) |
| 8 |
–12 VDC (blue) |
20 |
+5 VDC (red) |
| 9 |
Common (black) |
21 |
TFSC (brown) |
| 10 |
Common (black) |
22 |
+5 VDC (red) |
| 11 |
+3.3 VDC (blue/white) |
23 |
+3.3 VDC (blue/white) |
| 12 |
+3.3 VDC (blue/white) |
24 |
Common (black) |
1 Pin 5 — PWRGOOD is a status signal generated by the power supply to
notify the computer that the DC operating voltages are within the ranges required for
proper computer operation.
2 Pin 13 — PSON# is activated by pressing and
releasing the power button while the power supply is in standby mode. Activating PSON#
connects the power supply’s PSON# input to ground, thereby switching the power supply
to full-on condition. |
The following figure shows the P2 DC power connector.
| 1 |
+3.3 VDC (blue/white) |
9 |
+5 V (red) |
| 2 |
Common (black) |
10 |
Common (black) |
| 3 |
+12 V (yellow) |
11 |
N/C |
| 4 |
N/C |
12 |
N/C |
| 5 |
N/C |
13 |
N/C |
| 6 |
N/C |
14 |
+5 V (red) |
| 7 |
+12 V (yellow) |
15 |
Common (black) |
| 8 |
Common (black) |
16 |
N/C |
The following figure shows the P3, P4, P5, P7, and P8 DC power
connectors.
 |
| 1 |
+12 VDC (yellow) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+5 VDC (red) |
|
The following figure shows the P6 DC power connector.
 |
| 1 |
+5 VDC (red) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+12 VDC (yellow) |
|
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