User Guide

System Memory: Dell OptiPlex GX115 System User's Guide

System Memory: Dell™ OptiPlex™ GX115 System User's Guide

	Overview		Removing DIMMs
	Installing DIMMs

Overview

You can increase system memory up to 512 megabytes (MB) by using synchronous dynamic random-access memory (SDRAM) dual in-line memory modules (DIMMs). Figure 7 in "Inside Your Computer" shows the location of the DIMM sockets on the system board (DIMMs must be non-error checking and correction [ECC]).

When you add system memory, you may install DIMMs in either socket. For optimum operation, Dell recommends that you install a DIMM in socket A first (closest to the processor) before installing a DIMM in socket B.

Installing DIMMs

To upgrade memory, perform the following steps.

CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you upgrade memory, see the other precautions in "Safety First—For You and Your Computer. "

Remove the computer cover according to the instructions in "Removing and Replacing the Computer Cover."

If necessary, remove any DIMMs that occupy sockets in which you plan to install the upgrade DIMMs.
Install the upgrade DIMMs.

Locate the plastic securing clips at each end of the socket (see Figure 1).

Press the clips outward until they snap open.

Press the DIMM straight into the slot running down the center of the socket until the securing tabs snap into place around the ends of the DIMM.

Figure 1. Installing a DIMM

1	Securing clips (2)
2	Slot

Replace the computer cover, reconnect your computer and peripherals to their electrical outlets, and turn them on.

NOTE: After you remove and replace the cover, the chassis intrusion detector causes the following message to appear on the screen at the next system start-up:

ALERT! Cover was previously removed.

The system detects that the new memory does not match the existing system configuration information and generates the following message:

The amount of system memory has changed.
Strike the F1 key to continue, F2 to run the setup utility

Press <F2> to enter System Setup, and check the value for System Memory.
The system should have already changed the value of System Memory to reflect the newly installed memory. Verify the new total. If it is correct, skip to step 7.
If the memory total is incorrect, turn off and disconnect your computer and peripherals from their electrical outlets. Remove the computer cover, rotate the power supply, and check the installed DIMMs to make sure that they are seated properly in their sockets. Then repeat steps 3, 4, and 5.
Reset the chassis intrusion detector by changing Chassis Intrusion to Enabled or Enabled-Silent.

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

When the System Memory total is correct, press <Esc> to exit System Setup.
Run the Dell Diagnostics to verify that the DIMMs are operating properly.

Removing DIMMs

To remove a DIMM, press the securing clips outward simultaneously until the DIMM disengages and pops out slightly from the socket (see Figure 2).

Figure 2. Removing a DIMM

1	Securing clips (2)

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