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Chapter 4: Motherboard Connections
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
4.5 LED Indicators
UID LED
LED Indicator
LED Color
Definition
Blue: On
Unit Identified
Unit ID LED
A rear UID LED indicator at UID_LED1 is located near the UID switch on the back panel. This
UID indicator provides easy identification of a system.unit that may need service.
IPMI LAN LEDs
A dedicated IPMI LAN, located on the back panel, has two LED indicators. The amber LED
on the right of the IPMI LAN port indicates activity, while the LED on the left indicates the
speed of the connection. See the table below for more information.
IPMI LAN LEDs
Color/State
Definition
Link (left)
Green: Solid
Amber: Solid
100 Mbps
1Gbps
Activity (Right)
Amber: Blinking
Active
