Dell OptiPlex GX150 User Guide - Page 117

System Memory - processor upgrade

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Removing and Replacing the Expansion-Card Cage in the Small Desktop System To remove the expansion-card cage from the small desktop system, perform the following steps. CAUTION: Before you perform this procedure, see "Safety Information." 1. Open the computer cover. 2. Check any cables connected to expansion cards through the back-panel openings. Disconnect any cables that will not reach the cage once it is removed from the chassis. Removing the Expansion-Card Cage From the Small Desktop System 3. Gently pull on the handle and lift the expansion-card cage away from the chassis. To replace the expansion-card cage in the small desktop system, perform the following steps: 1. Align the slots in the side of the expansion-card cage with the tabs on the side of the system, and slide the expansion-card cage down into place. Replacing the Expansion-Card Cage In the Small Desktop System 2. Make sure that the riser board is fully seated in the connector on the system board. 3. Reconnect any cables that you removed in step 2 of the previous procedure. System Memory You can increase system memory up to 512 MB by using synchronous dynamic random-access memory (SDRAM) dual in-line memory modules (DIMMs). The system board illustration shows the location of the DIMM sockets on the system board (DIMMs must be non-error checking and correction [non-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. NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at support.dell.com. 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 open the computer cover. Also, before you upgrade memory, see the other precautions in "Safety Information. "

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Removing and Replacing the Expansion-Card Cage in the Small Desktop System
To remove the expansion-card cage from the small desktop system, perform the following steps.
1.
Open the computer cover
.
2.
Check any cables connected to expansion cards through the back-panel openings. Disconnect any cables that will not reach the cage once it
is removed from the chassis.
Removing the Expansion-Card Cage From the Small Desktop System
3.
Gently pull on the handle and lift the expansion
-card cage away from the chassis.
To replace the expansion-card cage in the small desktop system, perform the following steps:
1.
Align the slots in the side of the expansion-card cage with the tabs on the side of the system, and slide the expansion-card cage down into
place.
Replacing the Expansion-Card Cage In the Small Desktop System
2.
Make sure that the riser board is fully seated in the connector on the system board.
3.
Reconnect any cables that you removed in
step 2
of the previous procedure.
System Memory
You can increase system memory up to 512 MB by using synchronous dynamic random-access memory (SDRAM) dual in-line memory modules
(DIMMs). The
system board
illustration shows the location of the DIMM sockets on the system board (DIMMs must be non-error checking and
correction [non-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: Before you perform this procedure, see "
Safety Information
."
NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at
support.dell.com
.
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 open the computer cover. Also, before you upgrade memory,
see the other precautions in "
Safety Information
. "