Lenovo System x3850 X6 Installation And Service Manual page 50

The following illustration shows the connectors, LEDs, and controls on the full-length I/O book:
Full-length I/O book
Slot power I/O board
LEDs error LED
• Slot error LEDs: The states of the slot error LEDs are as follows:
Off: The slot or adapter is in normal operation.
On: A slot error has occurred.
• Slot power LEDs: The states of the power LEDs are as follows:
Off: Input power to the slot is not present.
On: Power to the slot is present. You cannot remove the I/O book from the server until the power LEDs
on all three adapter slots are off.
Blinking: The slot is in the process of powering on or off. Do not remove the I/O book from the server.
• Power button: Press this button to power the full-length I/O book PCIe slots off or on. The power LED for
each slot blinks until all of the power LEDs for the slots are on or off (not blinking)
For notes and information about what you need to consider when you install this I/O book and instructions on
how to install it in the server, see "Installing the full-length I/O book" on page 80.
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System x3850 X6 and x3950 X6 Installation and Service Guide
Slot error
LEDs
Power
button