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Chapter 4: Motherboard Connections
4.5 LED Indicators
LAN LEDs
Four LAN ports (JLAN 1/2 and JLAN 3/4) are located on the I/O back panel of the motherboard.
Each Ethernet LAN port has two LEDs. The green LED indicates activity, while the other Link
LED may be green, amber, or off to indicate the speed of the connection. Refer to the tables
below for more information.
LAN Activity LED (Right)
LED State
Color
Status
Definition
Green
Flashing
Active
LAN Link LED (Left)
LED State
LED Color
Definition
Green
10Gbps
Yellow/Amber
1Gbps
IPMI LAN LEDs
In addition to the four LAN ports, an IPMI LAN is also located on the I/O back panel. The
amber LED on the right indicates activity, while the green LED on the left indicates the speed
of the connection. Refer to the table below for more information.
IPMI LAN
Activity LED
Link LED
LAN 1/LAN 2
IPMI LAN
(X8ST3-F)
IPMI LAN LEDs
Color/State
Definition
Link (left)
Green: Solid
Amber: Solid
100 Mbps
1Gbps
Activity (Right)
Amber: Blinking
Active
Power LED
LED1 is the Power LED. When this LED is lit, it means power is present on the motherboard.
In suspend mode, this LED will blink on and off. Be sure to turn off the system and unplug
the power cord(s) before removing or installing components.
Power LED Indicator
LED Color
Definition
Off
System Off
(power cable not
connected)
Green
System On
BMC Heartbeat LED
BMC_HB_LED1 is the BMC heartbeat LED. When the LED is blinking green, BMC is
functioning normally. Refer to the table below for the LED status.
BMC Heartbeat
LED Indicator
LED Color
Definition
Green: Blinking
BMC Normal
