Power Supplies - IBM x3850 X6 Planning And Implementation Manual

These I/O Books are accessible from the rear of the server. Figure 2-10 shows the two I/O
Books.
Full-length I/O Book
Half-length I/O Book
Figure 2-10 Additional I/O Books
The x3850 X6 server supports up to two additional I/O Books of any type; the x3950 X6
server supports up to four additional I/O Books.
For more information about the additional I/O Books, see 3.13.1, "Half-length I/O Book" on
page 89 and 3.13.2, "Full-length I/O Book" on page 89.

2.1.5 Power supplies

The x3850 X6 has also up to four hot-swap redundant power supplies of several types:
1400W AC, 900W AC, and 750W -48V DC. The x3950 X6 has up to eight power supplies,
900W AC or 1400W AC. Figure 2-11 shows a 1400W AC power supply.
Figure 2-11 1400W power supply
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IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide