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4.5 LED Indicators
LAN Port LEDs
The motherboard's Ethernet ports has one LED indicators. The Activity LED is green and
indicates connection and activity. The Link LED may be green, orange/amber, or off to
indicate the speed of the connection. Refer to the tables below for more information.
LED Color
Orange
Green
UID LED Indicator (LED1)
The rear 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 LED1 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 Hearbeat LED (LEDM2)
A BMC Heartbeat LED is located at LEDM2 on the motherboard. When LEDM2 is blinking,
the BMC is functioning normally. See the table below for more information.
Link LED, Connection Link, Speed
Indicator
Definition
1 Gb/s
100 Mb/s
Activity LED
Color
State
Definition
None
No Connection
None
Off
Link
Yellow
Flashing
Active
UID LED
LED Indicator
Color
State
Blue
Solid On
None
Off
BMC Heartbeat
LED State
Color
State
Green
Solid On
Green
Blinking
Green
Fast Blinking
Chapter 4: Motherboard Connections
Link LED
Definition
Unit Identified
UID Off
Definition
BMC is not ready
BMC Normal
BMC: Initializing
65
Activity LED
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