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¡ A pair of matched memory modules installed in connectors DIMM_1 and DIMM_2
or
¡ A pair of matched memory modules installed in connectors DIMM_1 and DIMM_2 and another matched pair installed in connectors DIMM_3 and
DIMM_4
l If you install mixed pairs of DDR2 533-MHz (PC2-4300), DDR2 667-MHz (PC2-5300), and DDR2 800-MHz (PC2-6400) memory, the modules function at the
slowest speed installed.
l Be sure to install a single memory module in the DIMM_1 connector, the connector closest to the processor, before you install modules in the other
connectors.
l While installing memory modules, ensure that you do not mix ECC and non-ECC memory.
Addressing Memory With 4-GB Configurations
Your computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs. Current operating systems, such as Microsoft®Windows®XP, can
only use a maximum of 4 GB of address space; however, the amount of memory available to the operating system is less than 4 GB. Certain components
within the computer require address space in the 4-GB range. Any address space reserved for these components cannot be used by computer memory.
Installing Memory
1. Follow the procedures in Before You Begin.
2. Remove the computer cover (see Removing the Computer Cover).
3. Lay the computer on its side so that the system board is on the bottom of the inside of the computer.
4. Press out the securing clip at each end of the memory module connector.
1
Channel A: matched pair of memory
modules in connectors DIMM_1 and
DIMM_2 (white securing clips)
2
Channel B: matched pair of memory
modules in connectors DIMM_3 and
DIMM_4 (black securing clips)
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. You should install your original memory modules in pairs either in connectors DIMM_1 and DIMM_2 or
connectors DIMM_3 and DIMM_4.
CAUTION: Before you perform 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.