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Inside Your Computer: Dell™ OptiPlex™ GX110 System User's Guide

	Overview		System Board Labels
	Internal Views		Rotating the Power Supply Away From the System Board (Midsize and Mini Tower Chassis Only)
	System Board Components		Removing and Replacing the Front Bezel (Mini Tower Chassis Only)
	System Board Jumper		Removing and Replacing the Expansion-Card Cage

Overview

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."

Internal Views

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

System Board Components

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

System Board Jumper

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

Jumper	Setting	Description
PSWD	(default)	System password features are enabled. System password features are disabled.
jumpered       unjumpered

System Board Labels

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

Rotating the Power Supply Away From the System Board (Midsize and Mini Tower Chassis Only)

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.

CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer."

1. Remove the computer cover as instructed in "Removing and Replacing the Computer Cover."

2. Disconnect the AC power cable from the AC power receptacle on the back of the power supply.   
   
   
3. 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

Removing and Replacing the Front Bezel (Mini Tower Chassis Only)

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.

CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer."

1. Remove the computer cover.
   
   
2. 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)

3. 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.

Removing and Replacing the Expansion-Card Cage

This section describes how to remove and replace the expansion-card cage.

Removing and Replacing the Small-Form-Factor Chassis Expansion-Card Cage

To remove the expansion-card cage from the small-form-factor chassis, perform the following steps.

CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer."

1. Remove the computer cover as instructed in "Removing and Replacing the Computer Cover."

2. 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.
   
   
3. 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

4. Slide the expansion-card cage out of the chassis.
   
   
5. 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:

1. 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.
   
   
2. 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.
   
   
3. Reconnect any cables that you removed in step 2 of the previous procedure.

Removing and Replacing the Low-Profile or Midsize Chassis Expansion-Card Cage

To remove the expansion-card cage from the low-profile chassis or midsize chassis, perform the following steps.

CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer."

1. Remove the computer cover as instructed in "Removing and Replacing the Computer Cover."

2. 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.
   
   
3. 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

4. Slide the expansion-card cage out of the chassis.
   
   
5. 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:

1. 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.
   
   
2. 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.
   
   
3. Reconnect any cables that you removed in step 2 of the previous procedure.

Removing and Replacing the Mini Tower Chassis Expansion-Card Cage

To remove the expansion-card cage from the mini tower chassis, perform the following steps.

CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer."

1. Remove the computer cover as instructed in "Removing and Replacing the Computer Cover."
   

2. 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.
   
   
3. 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)

4. Slide the expansion-card cage out of the chassis.
   
   
5. 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:

1. 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.
   
   
2. 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).
   
   
3. Reconnect any cables that you removed in step 2 of the previous procedure.

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