Dell OptiPlex 330 User Manual page 79

Mini Tower — Mini Tower Specifications
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Desktop — Desktop Computer Specifications
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NOTICE: Do not install ECC or buffered memory modules. Only unbuffered, non-ECC memory is supported.
Installation Guidelines
If a single DIMM is installed, you must install it in connector DIMM_1.
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For best performance, memory modules should be installed in pairs of matched memory size, speed, and technology. If the memory modules are not
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installed in matched pairs, the computer will operate, but with a slight reduction in performance (see the label on the module to determine the module's
capacity). For example, if you install a mixed pair of DDR2 667-MHz and DDR2 800-MHz memory, the modules function at the slowest speed installed.
Installing Memory
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: 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.
1. Follow the procedures in Before You
2. Remove the computer cover (see
NOTICE: Before removing memory, you may need to remove the Optical Drive. See
3. Press the securing clip at each end of the memory module connector.
1 cutouts (2)
3 notch
5 crossbar
4. Align the notch on the bottom of the module with the crossbar in the connector.
NOTICE: To avoid damage to the memory module, press the module straight down into the connector while you apply equal force to each end of the
module.
5. Insert the module into the connector until the module snaps into position.
If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.
6. Replace the Optical Drive, if necessary (see
7. Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer.
Begin.
Removing the Computer Cover).
2 memory module
4 securing clip (2)
Optical Drive).
Optical Drive.