Fujitsu SPARC Enterprise M4000 Overview Manual page 39

FIGURE 1-19
.
Location Number
1
The I/O unit (IOU) is used in both the midrange servers. Refer to the SPARC
Enterprise M4000/M5000 Servers Service Manual for more information on the IOU.
The IOU houses the following:
Four PCIe 8 lane, short card slots (four upper slots)
■
One PCI-X short card slot (lowest slot)
■
The IOU holds cassettes that support four PCIe cards and one PCI-X card.
The PCIe features include a high-speed serial point-to-point interconnect. Compared
with conventional PCI buses, the PCIe data transfer rates are doubled.
I/O Unit Locations in the M5000 Server
1
1
Component
I/O unit
Maximum Number per Server
2
Chapter 1 System Overview 1-27