Front view

Note: The computer hardware might look slightly different from the illustration.

Figure 1. Front connectors, controls, and indicators

`1` Power button	`2` Four-digit diagnostics display
`3` SD card slot	`4` Headset connector
`5` Always On USB 3.0 connector	`6` USB 3.0 connectors (3)
`7` Optical-drive eject/close button (available on some models)	`8` Photoelectric sensor
`9` Storage drive activity indicator	`10` Power indicator

Note: The orientation of the ThinkStation^® logo plate on the front of your computer is adjustable. When you lay the computer on its side, you can slightly pull out the logo plate, turn it 90-degree counterclockwise, and then push it back in.

1 Power button

Press the power button to turn on your computer. If your computer is unresponsive, you can turn off the computer by pressing and holding the power button for four or more seconds.

2 Four-digit diagnostics display

The four-digit diagnostics display on the front of the computer displays text and a numerical error code when the computer detects an issue or error.

3 SD card slot

Insert a secure digital (SD) card into the slot so that the data on the card can be accessed and read.

4 Headset connector

Connect the headset to your computer through the headset connector.

5 Always On USB 3.0 connector

Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or printer. With the power cord connected, you can charge the connected USB device even when the computer is in hibernation mode or turned off. If the Always On USB connector function is not enabled, open the Power Manager program and enable the function. To open the Power Manager program, see Accessing a program on your computer. To enable the Always On USB connector, refer to the help system of the Power Manager program.

6 USB 3.0 connector (3)

Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or printer.

7 Optical-drive eject/close button

Press the button to eject or close the tray of the optical drive.

8 Photoelectric sensor

This sensor receives the flash light initiated by the Lenovo PC Diagnostic application installed in the smartphone. Then, the sensor triggers the computer to send the tune of the current error event to the smartphone.

9 Storage drive activity indicator

This indicator shows the status of the internal storage drives (such as hard disk drives or solid-state drives).

On: The storage drives are active and data is being transferred.

Off (when the computer is powered on): The storage drives are not in use or no data is being transferred.

10 Power indicator

When the power indicator is on, the computer is turned on.