Additional I/O Books - IBM x3850 X6 Planning And Implementation Manual

Figure 2-9 shows the internals of the Primary I/O Book, as viewed from the front of the server.
The black air baffle is raised to show internal components.
Figure 2-9 The Primary I/O Book internals
The x3850 X6 has one Primary I/O Book. The x3950 X6 has two Primary I/O Books. For more
information about the Primary I/O Book, see 3.12, "Primary I/O Book" on page 85.

2.1.4 Additional I/O Books

Additional I/O Books provide additional I/O capabilities, each with 3 PCIe slots. There are two
types of additional I/O Books:
Half-length I/O Book, supporting three half-length adapters
Full-length I/O Book, supporting either full-length or half-length adapters.
The Full-length I/O Book is designed to accept GPU adapters and co-processors, including
double-wide adapters that require up to 300W of power. The Full-length I/O Book includes
two auxiliary power connectors, 150W and 75W, as well as power cables.
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Chapter 2. Technology