Dell OptiPlex GX100 User Manual download pdf (Page 70)

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SystemMemory:Dell™OptiPlex™GX100SystemUser'sGuide

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.

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

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

3. Install the upgrade DIMMs.

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

b. Press the clips outward until they snap open.

c. 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

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

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

Overview

Removing DIMMs

Installing DIMMs

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. "

Securing clips (2)

Slot

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.

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Dell OptiPlex GX100 User Manual Page 70