Memory Upgrade; Rules For Adding Memory - Acer Altos 900 User Manual

2.7

Memory Upgrade

The six 72-pin SIMM sockets onboard support Fast Page Mode or Acer's
EDO/ECC 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.

2.7.1 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 S6 and S5 (bank 1) or S2 and
S1 (bank 3). You can not use a single 16-MB SIMM alone for 16-MB memory.
•
Always install SIMMs starting from an inner socket. For example, install
SIMMs in socket S6 before socket S5, or in socket S2 before socket S1.
•
Always remove SIMMs starting from an outer socket. For example, remove
SIMMs in socket S5 before socket S6, or in socket S1 before socket S2.
•
Most operating systems require that memory capacity changes be registered
in the system ECU.
Chapter 2 - System Board 2-11