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Memory
Dell™ OptiPlex™ SX270 Systems User's Guide
Memory Installation Guidelines
Installing Memory
Removing Memory
Memory Installation Guidelines
For information on the type of memory supported by your computer, look under "
Memory
" in the Technical Specifications section.
DDR Memory Overview
DDR memory modules should be installed in
pairs of matched memory size, speed, and technology
. If the DDR memory modules are not installed in matched
pairs, the computer will continue to operate, but with a slight reduction in performance.
The recommended memory configurations are:
l
A memory module installed in connector DIMM_1
or
l
A pair of matched memory modules installed in connectors DIMM_1 and DIMM_2
l
If you install mixed pairs of PC2700 (DDR 333-MHz) and PC3200 (DDR 400-MHz) memory, the modules function at the slowest speed installed.
l
Be sure to install a single memory module in DIMM_1, the connector closest to the processor, before you install a module in the other connector.
l
The actual speed of the SDRAM memory channel will depend on the speed of the processor's front side bus.
Installing Memory
1.
Shut down the computer through the
Start
menu.
2.
Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut
down your computer, turn them off now.
3.
Disconnect any telephone or telecommunication lines from the computer.
4.
Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
5.
Remove the computer stand, if it is attached.
NOTICE:
Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at
support.dell.com
.
NOTE:
Always install DDR memory modules in the order indicated on the system board.
NOTICE:
Do not install ECC memory modules.
NOTE:
Memory purchased from Dell is covered under your computer warranty.
NOTICE:
If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that
you may have, even if you purchased the new modules from Dell. If possible,
do not
pair an original memory module with a new memory module.
Otherwise, your computer may not start properly.
CAUTION:
Before working inside your computer, read the safety instructions in "
CAUTION: Safety Instructions
.
CAUTION:
To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of
your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
NOTICE:
To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
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