55
Upgrading the system memory
This section explains the procedures for removing and installing a
fully-buffered memory module.

System memory interface

The mainboard has eight DIMM slots divided into two memory
branches. Each branch is made up of two channels each, which in turn
comprised of two FBD slots.
•Branch 0
• Channel A - DIMMA1 and DIMMA2
• Channel B - DIMMB1 and DIMMB2
•Branch 1
• Channel C - DIMMC1 and DIMMC2
• Channel D - DIMMD1 and DIMMD2

System memory configuration guidelines

• To ensure data integrity, use only Acer-approved 240-pin, DDR2
667 FBD ECC modules in 512 MB, 1 GB, or 2 GB capacities.
• Use identical modules—same specification for size, speed, and
organization.