Service manual

System Overview 1-11
Figure 1–5 shows a system drawer backplane and the location of module and
cable connectors.
Connectors for global port cables
CPU module connectors
Memory module connectors
Power system manager (PSM) module connector
Console serial bus (CSB) connector
Clock splitter module connector
Local I/O riser module connectors
Directory module connector
Main power module connector
Auxiliary power module connector
11
48V power cable connector
The major difference between the system box design and the drawer design is
that the global port is on the drawer backplane whereas in the system box
global ports are distinct modules. See Section 1.17 for information on the
system box global port.
Another difference is the orientation of the I/O riser ports. In the drawer the
port is perpendicular to the backplane whereas in the system box the port is
parallel to the backplane. See Sections 1.14.1 and 1.14.2 for descriptions of I/O
riser modules for the system box and the drawer-based systems.