Service manual

System Overview 1-19
The system motherboard has the logic for the system bus. It is the backplane that
holds the CPU, memory, bridge, and power control modules. Figure 1-13 shows
diagrams of the three motherboards used in AlphaServer 4000/4100 systems. The
module locations are designated by the callouts.
➊ CPU module
➋ Memory module
➌ Bridge module
➍ Power control module