Dimm Configurations - IBM 2158240 - Aptiva E - 2158 Maintenance And Service Manual

DIMM Configurations

The 2158 system board has two DIMM sockets. A maximum of 256KB memory
may be installed. The 2163 system board has three DIMM sockets. A
maximum of 384KB memory may be installed.
You can install 16MB, 32MB, 64MB, or 128MB PC-100 DIMM in any sockets
and with any combinations.
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