IBM System x3950 X6 Product Manual page 23

The following figure shows the two optional I/O Books: the Half-length I/O Book and the Full-length I/O
Book.
Figure 9. Half-length I/O Book and the Full-length I/O Book
The following figure shows the Half-length I/O Book.
Figure 10. Half-length I/O Book
Each slot in the Half-length I/O Book and the Full-length I/O Book supplies up to 75 W of power.
The Full-length I/O Book also includes two auxiliary power connectors. With the usage of these
connectors and the supplied power cords, the I/O book supports one double-wide adapter up to 300 W.
The auxiliary power connectors are as follows:
One 2x4 power connector, which supplies up to 150 W of additional power to the adapter

One 2x3 power connector, which supplies up to 75 W of additional power to the adapter

IBM System x3950 X6 23