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Front I/O module

The front I/O module of the server provides controls, connectors, and LEDs. The front I/O module varies by model.

Figure 1. 2.5-inch drive chassis front I/O module
2.5-inch drive chassis front I/O module
Figure 2. 3.5-inch drive chassis front I/O module
3.5-inch drive chassis front I/O module
1 Power button/LED (green)4 System ID button/LED (blue)
2 Drive activity LED (green)5 System error LED (yellow)
3 Network activity LED (green) 

1 Power button/LED (green)​

Press this button to turn the server on and off manually. The states of the power LED are as follows:
StatusColorDescription
OffNonePower is not present, or the power supply 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 power has failed.

Slow blinking (about one flash per second)GreenThe server is off and is ready to be powered on (standby state).
Solid onGreenThe server is on and running.

2 Drive activity LED (green)​

The drive activity LED indicates the following status:

  • The LED is lit: the drive is powered, but not actively reading or writing data.

  • The LED is flashing: the drive is being accessed.

3 Network activity LED (green)​

The network activity LED helps you identify the network connectivity and activity.
StatusColorDescription
OnGreenThe server is connected to a network.
BlinkingGreenThe network is connected and active.
OffNoneThe server is disconnected from the network.

4 System ID button/LED (blue)​

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.

5 System error LED (yellow)​

The system error LED helps you to determine if there are any system errors.
StatusColorDescriptionAction
OnYellow
An error has been detected on the server. Causes might include one or more of the following errors:

  • The temperature of the server reached the non-critical temperature threshold.

  • The voltage of the server reached the non-critical voltage threshold.

  • A fan has been detected to be running at low speed.

  • The power supply has a critical error.

  • The power supply is not connected to the power.

Check system logs or internal error LEDs to identify the failed part.

OffNoneThe server is off or the server is on and is working correctly.None.