Acer Aspire X3990 - Install the Memory

51 Chapter 3
Install the Memory
1. Open the holding clips on both sides of the DIMM slot outward.
2. Press down the memory.
IMPORTANT:pls refer to below installing memory rule.
DIMM1 DIMM2
A
AA
AB
Remark:A and B show different size
of memory, size:A>B