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Inside Your Computer: Dell OptiPlex GX1 Small-Form-Factor System User's Guide
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Inside Your Computer: Dell™ OptiPlex™ GX1
Small-Form-Factor System User's Guide
This section describes the inside of your computer and may be used
as a reference before performing an upgrade procedure. Before removing the computer cover,
see "Safety First—For You and Your Computer"
and "Removing and Replacing the Computer Cover."
Figure 1 shows a side view of the small-form-factor chassis to help
you orient yourself when working inside the computer.
Figure 1.
Small-Form-Factor Chassis Orientation View
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| 1 |
System board |
| 2 |
Diskette drive |
| 3 |
Hard-disk drive |
| 4 |
CD-ROM drive |
| 5 |
Power supply |
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Figure 2 shows the small-form-factor chassis with the cover removed.
Figure 2. Inside the
Small-Form-Factor Chassis
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| 1 |
CD-ROM drive interface cable |
| 2 |
Externally accessible upper bay |
| 3 |
Hard-disk drive |
| 4 |
Diskette-drive interface cable |
| 5 |
Hard-disk drive interface cable |
| 6 |
Expansion-card cage |
| 7 |
System board |
| 8 |
Expansion-card slots |
| 9 |
I/O
ports and connectors |
| 10 |
Padlock ring |
| 11 |
AC power receptacle |
| 12 |
Security cable slot |
| 13 |
Power supply |
| 14 |
Chassis intrusion switch |
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Figure 3 shows the system board and the location of all its sockets
and connectors.
Figure 3. System
Board Components
 Front of Computer |
| 1 |
DIMM sockets (3) |
| 2 |
3.3-V power connector |
| 3 |
Battery socket |
| 4 |
Chassis intrusion switch connector |
| 5 |
Control panel connector |
| 6 |
Main power input connector |
| 7 |
Video-memory upgrade socket |
| 8 |
Primary EIDE interface connector |
| 9 |
Secondary EIDE interface connector |
| 10 |
Diskette/tape drive interface connector |
| 11 |
System board jumpers |
| 12 |
Riser board connector |
| 13 |
ATI multimedia connector |
| 14 |
Audio line-in connector |
| 15 |
Audio line-out connector |
| 16 |
Microphone jack |
| 17 |
Optional integrated NIC connector |
| 18 |
Telephony connector |
| 19 |
Video connector |
| 20 |
CD-in connector |
| 21 |
Microprocessor fan connector |
| 22 |
Serial port 2 connector |
| 23 |
USB connectors (2) |
| 24 |
Mouse/keyboard connector (stacked) |
| 25 |
Parallel/serial port 1 connector
(stacked) |
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Figure 4 shows the layout of jumpers on the system board. Table 1 lists the system board
jumpers and their settings.
Figure 4. System Board
Jumpers
Jumpers are small blocks on a circuit board with two or more pins
emerging from them. Plastic plugs containing a wire fit down over the pins. The wire
connects the pins and creates a circuit.
To change a jumper setting, pull the plug off its pin(s) and
carefully fit it down onto the pin(s) indicated.
NOTICE: Make sure your system is turned off and unplugged
before you change a jumper setting. Otherwise, damage to your system or unpredictable
results may occur.
Table 1.
System-Board Jumper Settings
| * |
The correct microprocessor
speed is automatically detected and set by the system. Do not change the settings of these
jumpers. |
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The system can operate
with a microprocessor speed up to 600 MHz. |
| NOTE: For the full name of an abbreviation or
acronym used in this table, see the Glossary in your online System User's Guide. |
 |
jumpered |
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unjumpered |
Table 2 lists the labels for light-emitting diode (LED) indicators,
connectors, and sockets on the system board, and it gives a brief description of their
functions.
Table 2. System Board Indicators, Connectors, and Sockets
| Connector or Socket |
Description |
| AMC |
ATI multimedia channel |
| BATTERY |
Battery socket |
| CD_IN |
CD-ROM audio interface connector |
| DIMM_x |
DIMM socket |
| DSKT |
Diskette/tape drive interface connector |
| ENET |
NIC connector (optional) |
| FAN |
Microprocessor fan connector |
| HDLED |
Hard-disk drive LED connector (on riser
board) |
| IDEn |
EIDE interface connector |
| INTRUSION |
Chassis intrusion switch connector |
| KYBD |
Keyboard connector |
| LINE-IN |
Audio line-in jack |
| LINE-OUT |
Audio line-out jack |
| MIC |
Microphone jack |
| MONITOR |
Video connector |
| MOUSE |
Mouse connector |
| P1 |
Wakeup On LAN power connector (on riser
board) |
| PANEL |
Control panel connector |
| PARALLEL |
Parallel port connector, sometimes
referred to as LPT1 |
| PCIn |
PCI expansion-card connector (on riser
board) |
| POWER_1 |
Main power input connector |
| POWER_2 |
3.3-V power input connector |
| RISER |
Riser board connector |
| SERIALn |
Serial port connectors |
| SLOT1 |
Microprocessor connector |
| TAPI |
Telephony connector |
| USB |
USB connector |
| VIDEO_UPGRADE |
Video-memory upgrade socket |
To remove the expansion-card cage from the small-form-factor
chassis, perform the following steps.
- Remove the computer cover.
- Check any cables connected to
expansion cards through the back-panel openings. Disconnect any cables that will not reach
to where the cage must be placed upon removal from the chassis.
- Locate the securing lever (see Figure 5). Rotate the lever
upward until it stops in an upright position.
Figure 5. Removing the
Expansion-Card Cage From the Small-Form-Factor Chassis
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| 1 |
Securing lever |
| 2 |
Expansion-card cage |
| 3 |
Tab |
| 4 |
Hook |
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- Slide the expansion-card cage out of the chassis.
- Lift the expansion-card cage up and away from the chassis.
To replace the expansion-card cage in the small-form-factor chassis,
perform the following steps:
- With the
securing lever in the upright position, align the slots in the left side of the
expansion-card cage with the tabs on the back and bottom of the chassis (see Figure 5). Slide the expansion-card cage
into place.
- Rotate the securing lever downward until it is flush with the top
side of the chassis. Make sure that the riser board is fully seated in the RISER connector
on the system board.
- Reconnect any cables you removed in step 2 of the previous procedure.
- Replace the computer cover,
and reconnect your computer and peripherals to their electrical outlets and turn them on.
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NOTE: If Enabled, the Chassis Intrusion option will cause the
following message to be displayed at the next system start-up:
ALERT! Cover was previously removed. |
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