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Chapter 4: Motherboard Connections
4.5 LED Indicators
BMC Heartbeat LED
A BMC Heartbeat LED is located at LEDBMC on the motherboard. When LEDBMC is blinking,
the BMC is functioning normally. Refer to the table below for more information.
SFP28 (SFP1) Link/Activity LED Indicator
One LAN Link/Activity LED indicator is located at D2 on the add-on card. See the table below
for the LED states and location.
LAN Port Link/Activity LED
LED State
LED
Color
Definition
LNK
Green
25 Gbps Link Speed
Yellow
10 Gbps or 1 Gbps
Off
No Connection
ACT
Blinking Green 25/10/1 Gbps Active
BMC Heartbeat LED Indicator
LED Color
Definition
Green:
Blinking
BMC: Normal
