You can press this button to turn the server on and off manually. The power status LED helps you determine
the current power status.
Status Color
Description
Off
None Power is not present, or the power supply unit has failed.
Fast blinking
(about four
flashes per
second)
Green
• The server is off, but the XClarity Controller is initializing, and the server is not
ready to be powered on.
• System-board-assembly power has failed.
Slow blinking
(about one flash
per second)
Green The server is off and is ready to be powered on (standby state).
Solid on Green The server is on and running.
4 Network activity LED
Compatibility of the NIC adapter and the network activity LED:
NIC adapter
Network activity LED
OCP module Support
PCIe NIC adapter
Not support
When an OCP module is installed, the network activity LED on the front I/O assembly helps you identify the
network connectivity and activity. If no OCP module is installed, this LED is off.
Status Color
Description
On Green
The server is connected to a network.
Blinking
Green
The network is connected and active.
Off None The server is disconnected from the network.
Note: If the network activity LED is off when an OCP module is installed, check the
network ports in the rear of your server to determine which port is disconnected.
5 System ID button with system ID LED
Use this system ID button and the blue system ID LED to visually locate the server. Each time you press the
system ID button, the state of the system ID LED changes. The LED can be changed to on, blinking, or off.
You can also use the Lenovo XClarity Controller or a remote management program to change the state of the
system ID LED to assist in visually locating the server among other servers.
If the XClarity Controller USB connector is set to have both the USB 2.0 function and XClarity Controller
management function, you can press the system ID button for three seconds to switch between the two
functions.
6 System error LED
The system error LED provides basic diagnostic functions for your server. If the system error LED is lit, one or
more LEDs elsewhere in the server might also be lit to direct you to the source of the error.
Chapter 2. Server components 23
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