Supermicro A+ AS-4023S-TRT User Manual page 54

A+ Server AS -4023S-TRT User's Manual
Universal Serial Bus (USB) Ports
There are two USB 2.0 ports (USB0/1) and two USB 3.0 ports (USB4/5) on the I/O back panel.
UID Switch and LED Indicator
A Unit Identifier (UID) switch and UID LED are located on the I/O backpanel, one UID LED
indicator header is located on JF1. The rear UID LED is located next to the UID switch. The
front UID LED is located on pins 7 & 8 on the front control panel (JF1). When you press the
UID switch, both rear and front UID LED indicators will turn on. Press the UID switch again
to turn off the LED indicators. Use this UID Indicator system to 'mark' the system, so the
system can be easly identified whether on the front or back (e.g., a system rack with multiple
units installed).
Note: UID can also be triggered via IPMI on the serverboard. For more information on IPMI,
please refer to the IPMI User's Guide posted on our website at
UID Switch
Pin Definitions
Pin# Definition
1 Ground
2 Ground
3 Button In
4 Button In
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UID LED
Pin Definitions
Color
Blue: On
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Status
Unit Identified