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Chapter 4: Motherboard Connections
4.5 LED Indicators
LAN LEDs
The Ethernet ports each have two LEDs. One LED indicates activity when flashing, while the
other LED may be green, amber or off to indicate the speed of the connection.
LAN LED
(Connection Speed
Indicator)
LED Color
Definition
Off
10 Mb/s
Amber
1 Gb/s
Green
10 Gb/s
BMC Heartbeat LED
LEDM1 (LEDBMC) is the BMC heartbeat LED. When the LED is blinking green, BMC is
functioning normally.
M.2 Activity LED
LED1 indicates when one M.2 storage is active.
Dedicated IPMI LAN LEDs
A dedicated IPMI LAN port is on the I/O back panel. The amber LED on the right of the IPMI
LAN port indicates activity, while the LED on the left indicates the link speed of the connection.
IPMI LAN LED
(Connection Speed Indicator)
Color/State
Definition
Green: Blinking
100 Mbps
Amber: Blinking
1G
BIOS Recovery
Close pins 2-3 of jumper JBR1 for BIOS recovery. The default setting is on pins 1 and 2 for
normal operation.
BIOS Recovery
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Normal
Pins 2-3
BIOS Recovery