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Inside Your Computer: Dell™ OptiPlex™ GX110 System User's
Guide
This section describes the inside of your computer as a reference
for you to use before you perform an upgrade procedure. Before you remove the computer
cover, see "Safety First—For You and Your
Computer" and "Removing and Replacing
the Computer Cover."
Figure 1, Figure 2, Figure 3, and Figure 4 show a side view of the
small-form-factor, low-profile, midsize, and mini tower chassis, respectively, to help you
orient yourself when you work inside the computer.
Figure 1.
Small-Form-Factor Chassis Orientation View
 |
| 1 |
System board |
| 2 |
Diskette drive |
| 3 |
Hard-disk drive |
| 4 |
CD-ROM drive |
| 5 |
Power supply |
|
Figure 2. Low-Profile
Chassis Orientation View
 |
| 1 |
System board |
| 2 |
Hard-disk drive |
| 3 |
Power supply |
| 4 |
Externally accessible drive bays |
|
Figure
3. Midsize Chassis Orientation View
 |
| 1 |
Internal drive cage |
| 2 |
Expansion-card cage |
| 3 |
System board |
| 4 |
Power supply |
| 5 |
Drive cage |
|
Figure 4. Mini Tower
Chassis Orientation View
 |
| 1 |
System board |
| 2 |
Power supply |
| 3 |
Drive cage |
| 4 |
Internal hard-disk drive bracket |
| 5 |
Expansion-card cage |
| 6 |
Bottom of computer |
|
Figure 5, Figure 6, Figure 7, and Figure 8 show the small-form-factor, low-profile,
midsize, and mini tower chassis, respectively, with the cover removed.
Figure 5. Inside the
Small-Form-Factor Chassis
 |
| 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 |
AC power receptacle |
| 11 |
Security cable slot |
| 12 |
Power supply |
| 13 |
Chassis intrusion switch |
|
Figure 6. Inside the
Low-Profile Chassis
 |
| 1 |
Diskette drive in upper bay |
| 2 |
Diskette drive interface cable |
| 3 |
Hard-disk drive interface cable |
| 4 |
Hard-disk drive |
| 5 |
Chassis intrusion switch |
| 6 |
Expansion-card cage |
| 7 |
Expansion-card slots |
| 8 |
Security cable slot |
| 9 |
I/O ports and connectors |
| 10 |
AC power receptacle |
| 11 |
Padlock ring |
| 12 |
Power supply |
|
Figure 7.
Inside the Midsize Chassis
 |
| 1 |
Drive in upper bay |
| 2 |
Internal drive cage |
| 3 |
Chassis intrusion switch |
| 4 |
Drive interface cable |
| 5 |
Expansion-card cage |
| 6 |
Security cable slot |
| 7 |
I/O ports and connectors |
| 8 |
AC power receptacle |
| 9 |
Padlock ring |
| 10 |
Power supply |
| 11 |
System board |
| 12 |
Drive interface cable |
|
Figure 8. Inside the
Mini Tower Chassis
 |
| 1 |
External drive bay |
| 2 |
Internal drive cage |
| 3 |
Chassis intrusion switch |
| 4 |
Hard-disk drive interface cable |
| 5 |
Expansion-card cage |
| 6 |
System board |
| 7 |
Riser board |
| 8 |
Padlock ring |
| 9 |
Security cable slot |
| 10 |
I/O ports and connectors |
| 11 |
AC power receptacle |
| 12 |
Power supply |
|
Figure 9 shows the system board and the location of all its sockets and connectors.
Figure 9. System
Board Components
 |
| 1 |
Optional audio jacks |
| 2 |
NIC connector |
| 3 |
Video connector |
| 4 |
CD audio cable connector (optional) |
| 5 |
Fan connector |
| 6 |
Telephony connector (optional) |
| 7 |
Serial port 2 connector |
| 8 |
USB connectors (2) |
| 9 |
Keyboard (lower) and mouse (upper)
connectors |
| 10 |
Parallel port (upper) and serial port 1
(lower) connectors |
| 11 |
Riser board connector |
| 12 |
System board jumpers |
| 13 |
EIDE1 connector |
| 14 |
EIDE2 connector |
| 15 |
Diskette/tape-drive connector |
| 16 |
PC speaker connector |
| 17 |
Battery |
| 18 |
DIMM connectors (2) |
| 19 |
Microprocessor |
| 20 |
3.3-volt (V) power connector |
| 21 |
Control panel connector |
| 22 |
DC power connector |
|
Figure 10 shows the jumper on the system board. Table 1 shows the system board jumper and
its settings.
Figure 10. System Board
Jumper
A jumper is a small block on a circuit board with two or more pins
emerging from it. Plastic plugs containing a wire fit down over the pins. The wire
connects the pins and creates a circuit.
NOTICE: Make sure that your system is turned off and unplugged before you
change the jumper setting. Otherwise, damage to your system or unpredictable results may
occur.
To change the jumper setting, pull the plug off its pin(s) and
carefully fit it down onto the pin(s) indicated.
Table 1.
System-Board Jumper Settings
Table 2 lists the labels for light-emitting diode (LED) indicators,
connectors, and sockets on the system board and gives a brief description of their
functions.
Table 2. System Board Indicators, Connectors, and Sockets
| Connector or Socket |
Description |
| AUX_PWR |
Auxiliary power indicator |
| B1 |
Battery socket |
| CD-IN |
CD-ROM drive audio cable connector
(optional) |
| DIMM_x |
Dual in-line memory module (DIMM) socket |
| DSKT |
Diskette/tape drive interface connector |
| ENET |
Integrated network interface controller
(NIC) connector |
| FAN |
Microprocessor fan connector |
| IDEn |
EIDE interface connector |
| INTRUSION |
Chassis intrusion switch connector |
| KYBD |
Keyboard connector |
| LINE-IN |
Line-in jack (optional) |
| LINE-OUT |
Line-out jack (optional) |
| MIC |
Microphone jack (optional) |
| MICROPROCESSOR |
Microprocessor connector |
| MODEM |
Telephony connector (optional) |
| MONITOR |
Video connector |
| MOUSE |
Mouse connector |
| PANEL |
Control panel connector |
| PARALLEL |
Parallel port connector; sometimes
referred to as LPT1 |
| POWER_1 |
Main power input connector |
| POWER_2 |
3.3-V power input connector |
| RISER |
Riser board connector |
| SERIALn |
Serial port connectors |
| USB |
Universal Serial Bus (USB) connectors |
To access some components on the system board, you may have to
rotate the midsize or mini tower chassis system power supply out of the way. To rotate the
power supply, perform the following steps.
- Remove the computer cover as instructed in "Removing and Replacing the Computer Cover."
- Disconnect the AC power cable from the AC power receptacle on the
back of the power supply.
- Free the power supply from the securing tab labeled "RELEASE
—>," and rotate it upward until it locks in its extended position.
Figure 11 illustrates rotating the power supply on the mini tower
chassis; on the midsize chassis, the power supply is on the right side.
Figure 11. Rotating the Power
Supply
 |
| 1 |
AC power cable |
| 2 |
AC power receptacle |
| 3 |
Power supply |
| 4 |
DC power cables |
| 5 |
Securing tab |
|
To access some drive bays in the mini tower chassis, you must first remove the front
bezel. To remove the front bezel, perform the following steps.
- Remove the computer cover.
- With the cover removed, release the bezel by pressing the tab release
(see Figure 12).
Figure 12. Removing the
Mini Tower Chassis Front Bezel
 |
| 1 |
Tab release |
| 2 |
Retaining hooks (2) |
|
- While you press the tab release, tilt the bezel away from the
chassis, disengage the two retaining hooks at the bottom of the bezel, and carefully pull
the bezel away from the chassis.
To replace the bezel, fit the two retaining hooks on the bezel into
their corresponding slots at the bottom of the mini tower chassis. Then rotate the bezel
toward the chassis until the tabs snap into their corresponding slots on the bezel.
This section describes how to remove and replace the expansion-card
cage.
To remove the expansion-card cage from the small-form-factor
chassis, perform the following steps.
- Remove the computer cover as instructed in "Removing
and Replacing 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 will be placed upon removal from the chassis.
- Locate the securing lever (see Figure
13), and rotate the lever upward until it stops in an upright position.
Figure 13. Removing the
Expansion-Card Cage From the Small-Form-Factor Chassis
 |
| 1 |
Securing lever |
| 2 |
Expansion-card cage |
| 3 |
Tab |
| 4 |
Hook |
|
- 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 13), and 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 that you removed in step 2 of the previous procedure.
To remove the expansion-card cage from the low-profile chassis or
midsize chassis, perform the following steps.
- Remove the computer cover as instructed in "Removing and Replacing 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 14), and rotate the lever
upward until it stops in an upright position.
Figure 14. Removing the
Expansion-Card Cage From the Low-Profile or Midsize Chassis
 |
| 1 |
Securing lever |
| 2 |
Expansion-card cage |
| 3 |
Slots (2) |
| 4 |
Tab |
|
- 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 low-profile chassis or
midsize 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 14), and 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 that you removed in step 2 of the previous procedure.
To remove the expansion-card cage from the mini tower chassis,
perform the following steps.
- Remove the computer cover as instructed in "Removing and Replacing 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
15), and rotate the lever upward until it stops in an upright position.
Figure 15. Removing the
Expansion-Card Cage From the Mini Tower Chassis
 |
| 1 |
Securing lever |
| 2 |
Tabs (2) |
| 3 |
Slots (2) |
|
- 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 mini tower 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 15), and slide the
expansion-card cage into place.
- Rotate the securing lever inward until it is flush with the top side
of the chassis. Make sure that the riser board is fully seated in the riser board connector on the system board (see Figure 9).
- Reconnect any cables that you removed in step 2
of the previous procedure.
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