Acer 900 - Memory Upgrade; Rules for Adding Memory

1-12 User’s Guide
1.7 Memory Upgrade
The six 72-pin SIMM sockets onboard support both Extended Data
Output (EDO) and fast-page mode SIMMs. You may install 4-MB and
16-MB single-density as well as 8-MB, and 32-MB double-density
SIMMs for a total of 192-MB system memory. The SIMM sockets
also support 64-MB SIMMs, when available, to achieve 384-MB
system memory.
1.7.1 Rules for Adding Memory
• Use only the same type of SIMM in a given bank
• You may combine different types of SIMMs for a particular
memory configuration as long as the SIMMs in each bank are of
the same type.
• Always install SIMMs in pairs. For example, for a total memory
of 16 MB, install two 8-MB SIMMs into the sockets marked SI6
and SI5 (bank 1) or SI2 and SI1 (bank 3). You can not use a
16-MB SIMM alone for a 16-MB memory.
• Always
install
SIMMs starting from an inner socket. For
example, install SIMMs in socket SI6 before in socket SI5, or in
socket SI2 before socket SI1.
• Always
remove
SIMMs starting from an outer socket. For
example, remove SIMMs in socket SI5 before in socket SI6, or in
socket SI1 before socket SI2.