Gateway e-4000 User Manual page 191

The following illustration shows the location of the memory modules for the
Gateway Micro Tower and 4-bay Small Form Factor cases.
To add or replace DIMM memory:
1
Identify your computer case style. For more information, see "Identifying
your computer case style" on page 106.
2
Open the case by following the instructions for your case style. Make sure
that you remove all external cables and the power cord.
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Adding or replacing memory
185