Led Indicators - Supermicro A+ AS -2015A-TR User Manual

4.5 LED Indicators

BMC LAN Port LEDs
A dedicated BMC LAN is located on the rear I/O panel and has two LED indicators. The LED
on the right indicates connection and activity, while the LED on the left indicates the speed of
connection. The Link LED may amber, green, or off to indicate the speed of the connection.
Refer to the tables below for more information.
UID LED Indicator (LED1)
The UID LED1 is located next to the UID switch. The front UID LED is located on the front
panel. When you press the UID switch, both rear UID LED and front UID LED indicators will
turn on. Press the UID switch again to turn off the LED indicators. Use this UID Indicator to
'mark' the system, so the system can be easily identified whether on the front or back (e.g.,
a system rack with multiple units installed).
BMC Heartbeat LED (LEDM1)
A BMC Heartbeat LED is located at LEDM1 on the motherboard. When LEDM1 is blinking,
the BMC is functioning normally. See the table below for more information.
Link LED,
Connection Link Speed Indicator
LED Color Definition
Amber 1 Gb/s
Green 100 Mb/s
Off 10 Mb/s
Activity LED
Color State
None No Connection
Yellow Solid On
Yellow Flashing
UID LED Indicator
Color State
None Off
Blue Solid On
Blue Slow Blinking
BMC Heartbeat
LED State
Color State
Green Solid On
Green Blinking
Green Fast Blinking
Chapter 4: Motherboard Connections
Definition
Link
Active
Definition
UID Off
Unit Identified by Local Site
Unit Identified by Remote Site
Defintion
BMC is not ready
BMC Normal
BMC: Initializing
61
Activity LED
Link LED