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Controller or a remote management program to change the state of the system ID LEDs 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.
5
System error LED
The system error LED provides basic diagnostic functions for your server.
Status
Color
Yellow
On
Off
None
XClarity Controller USB connector
6
Depending on the setting, this connector supports USB 2.0 function, XClarity Controller management
function, or both.
• If the connector is set for USB 2.0 function, you can attach a device that requires a USB 2.0 connection,
such as a keyboard, a mouse, or a USB storage device.
• If the connector is set for XClarity Controller management function, you can attach a mobile device
installed with the application to run XClarity Controller event logs.
• If the connector is set to have both functions, you can press the system ID button for three seconds to
switch between the two functions.
For more information, see "Set the front USB 2.0 connector for Lenovo XClarity Controller connection" on
page 88.
7
USB 3.1 Gen 1 connector
Used to attach a device that requires a USB 2.0 or 3.0 connection, such as a keyboard, a mouse, or a USB
flash drive.
Rear view
Use this information to locate the connectors and components on the rear of your server. The following
illustration shows the rear view of a server with a screw-secured, fixed power supply.
ThinkSystem ST250 Setup Guide
22
Description
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.
• A fan has been removed.
• The power supply has a critical error.
• The power supply is not connected to
the power.
The server is off or the server is on and is
working correctly.
Action
Check the event log to determine the exact
cause of the error.
None.
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