IBM x3850 X6 Planning And Implementation Manual page 106

The combined power consumption of all adapters installed in the Full-length I/O Book cannot
exceed 300W.
Note: The 2x3 connector is only intended to be used when one adapter is installed in the
first x16 slot (the up-most slot in Figure 3-29), either requiring 225W or 300W of power.
The location of the 2x3 connector prevents an adapter from being installed in the other x16
slot.
Figure 3-29 shows the Full-length I/O Book.
PCIe 3.0 x16 slot supporting
double-wide adapters requiring
up to 300W of power
PCIe 3.0 x16 slot; not available
if the 2x3 aux power connector
is used
Figure 3-29 Full-length I/O Book
Figure 3-30 shows the Full-length I/O Book with Intel Xeon Phi coprocessor installed.
Figure 3-30 The Full-length I/O Book with Intel Xeon Phi card installed
The Half-length I/O Book installs flush with the Primary I/O Book at the rear of the server. The
Full-length I/O Book, when installed, adds a 99 mm (4 inches) mechanical extension to the
base length dimension of the chassis.
90
IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide
PCIe 2.0 x8 2x4 aux power connector
slot (x4 wired) for 150W additional power
2x3 aux power connector
for 75W additional power