1 Power button/LED (white)
Press this button to turn the server on and off manually. The states of the power LED are as follows:
Status Color
Description
Solid on white The server is on.
Off None The server is off.
2 Drive activity LED (white)
This LED indicates the activity of the drives.
Note: The drive activity LED only indicates the activities of drives that are connected to the SATA ports on
the system board.
Status Color
Description
Blinking White The drives are active.
Off
None The drives are not active.
3 Mic-in connector
Plug in a microphone to this connector.
Note: This connector is only supported by Windows Client OS.
4 Headset connector
Plug in a headset with microphone to this connector. A standard headphone or microphone can also be
plugged into the connector.
Note: This connector is only supported by Windows Client OS.
5 USB Type-C 3.2 Gen 1 (5 Gbps) connector
The connector is available for a Type-C compatible device that requires USB 2.0 or 3.0 connection, such as a
keyboard, a mouse, or a USB flash drive.
6 USB Type-A 3.2 Gen 1 (5 Gbps) connectors (x4)
These connectors are available for Type-A compatible devices that require USB 2.0 or 3.0 connection, such
as a keyboard, a mouse, or a USB flash drive.
7 Front thermal sensor
The thermal sensor works by converting temperature variations into electrical signals. It can measure the
temperature of a system or space.
8 Optical drive bay
Depending on the model, the server might come with an optical drive installed in this drive bay. See
“Optical
drive and drive cage replacement” on page 72
.
Rear view
This section contains information about the important components on the rear of this server.
12
ThinkSystem ST45 V3 User Guide
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