Skip to main content

Front I/O assembly

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

The following illustrations show the front I/O assemblies for different server models. To locate the front I/O assembly, see Front view.
Figure 1. Front I/O assembly for server model with eight 3.5-inch drive bays
Front I/O assembly for server models with eight 3.5-inch drive bays

Figure 2. Front I/O assembly for server models with 2.5-inch drive bays or twelve 3.5-inch drive bays
Front I/O assembly for server models with 2.5-inch drive bays or twelve 3.5-inch drive bays

Table 1. Components on the front I/O assembly
CalloutCallout
1 USB 3.1 connectors2 Power button with power status LED
3 Network activity LED (for OCP 3.0 Ethernet adapter)4 System ID button with system ID LED
5 System error LED 

1 USB 3.1 connectors

Used to attach a device that requires a USB 2.0 or 3.1 connection, such as a keyboard, a mouse, or a USB storage device.

2 Power button with power status LED

You can press the power button to turn on the server when you finish setting up the server. You also can hold the power button for several seconds to turn off the server if you cannot turn off the server from the operating system. See: Turn on the server. The power status LED helps you to determine the current power status.
StatusColorDescription
Solid onGreenThe server is on and running.
Slow blinking (about one flash per second)GreenThe server is off and is ready to be powered on (standby state).
OffNoneThere is no ac power applied to the server.

3 Network activity LED

When an OCP 3.0 Ethernet adapter is installed, the network activity LED on the front I/O assembly 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.
Note
If no OCP 3.0 Ethernet adapter is installed, this LED is off.

4 System ID button with system ID LED

Use this system ID button and the blue system ID LED to visually locate the server. A system ID LED is also located on the rear of the server. Each time you press the system ID button, the state of both the system ID LEDs changes. The LEDs can be changed to on, blinking, or off.

5 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.

StatusColorDescriptionAction
OnYellowAn error has been detected on the server. Causes might include but not limited to the following errors:

  • A fan failure

  • A memory error

  • A storage failure

  • A PCIe device failure

  • A power supply failure

  • A CPU error

  • A system board error

Check the event log to determine the exact cause of the error.

Alternatively, follow the light path diagnostics to determine if additional LEDs are lit that will direct you to identify the cause of the error.

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