Half-length I/O book
Use this information for an overview of the half-length I/O book.
The half-length I/O book installs in the rear of the server. The server provides the ability to concurrently hot-
add or hot-remove PCIe adapters in this I/O book.
Note:
The ability to hot-plug the half-length I/O book is dependent on the operating system. If the operating
system does not support PCIe hot-plug, the addition or removal of a half-length I/O book might cause an
unrecoverable system error.
The half-length I/O book provides three PCIe Gen3 slots for half-length adapters. The I/O book provides the
following slots:
• Three PCIe Gen3 slots
– Two x8 slots
– One x16 slot
The following illustration shows the PCIe slots on the half-length I/O book board.
x8 PCIe Gen3 slots
x16 PCIe Gen3 slot
Half-length I/O book board
Board power button
The following illustration shows the connectors, LEDs, and controls on the half-length I/O book.
Half-length I/O book
I/O board
error LED
Slot power
LEDs
Slot error
LEDs
Power
button
•
Slot error LEDs:
The states of the slot error LEDs are as follows:
Off:
The slot or adapter is in normal operation.
34
System x3850 X6 and x3950 X6 Installation and Service Guide
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