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Chapter 4: Motherboard Connections
4.5 LED Indicators
LAN LEDs
Each LAN port has two LED indicators. The yellow LED indicates activity, while the link LED
may be green, amber, or off to indicate the speed of the connection. See the table below for
more information.
BMC Heartbeat LED
LEDM1 is the BMC heartbeat LED. When the LED is blinking green, BMC is functioning
normally. See the table below for the LED status.
Onboard Power LED Indicator
LED Color
Definition
Green:
Blinking
BMC Normal
Onboard Power LED
The Onboard Power LED is located at LED3 on the motherboard. When this LED is lit, it
means power is present on the motherboard. In suspend mode, this LED will blink on and
off. Turn off the system and unplug the power cord before removing or installing components.
Refer to the table below for more information.
Onboard Power LED Indicator
LED Color
Definition
Off
System Off
(power cable not
connected)
Green
System On
Activity Indicator
Color
Status
Definition
Off
No Connection
Yellow
Flashing
Active
LAN1/2 LED
(Connection Speed Indicator)
LED Color
Definition
Off
10 Mb/s
Green
100 Mb/s or 10Gb/s (X550)
Amber
1 Gb/s