Dell Dimension E520 - Manual (Page 70)

70
Removing and Installing Parts
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 DIMM connectors 1 and 2 or DIMM
connectors 3 and 4.
NOTE:
Memory purchased from Dell is covered under your computer warranty.
Addressing Memory With 4-GB Configurations
Your computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs. Current
32-bit operating systems, such as Microsoft
®
Windows
®
XP, can use a maximum of 4 GB of address
space; however, the amount of memory available to the operating system is less than that installed.
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
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 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)
1
2