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Chapter 4: Motherboard Connections
4.5 LED Indicators
LAN Port LEDs
The motherboard's Ethernet ports has two LED indicators. The Activity LED is green and
indicates connection and activity. The Link LED may be green, orange/amber, or off to
indicate the speed of the connection. Refer to the tables below for more information.
UID LED Indicator (LED1)
The rear LED1 is located next to the UID switch. The front UID LED is located on the front
panel. When you press the UID switch, both rear LED1 and front UID LED indicators will
turn on. Press the UID switch again to turn off the LED indicators. Use this UID Indicator to
'mark' the system, so the system can be easily identified whether on the front or back (e.g.,
a system rack with multiple units installed).
UID LED
LED Indicator
Color
State
Definition
Blue
Solid On
Unit Identified
None
Off
UID Off
Link LED, Connection Link, Speed
Indicator
LED Color
Definition
Orange
1 Gb/s
Green
10 Gb/s
Activity LED
Color
State
Definition
None
No Connection
None
Off
Link
Green
Flashing
Active
Activity LED
Link LED
H12SSW-NTR
M.2 Error LED (LED9 and LED11)
The M.2 Interface Detection LED indicates that an M.2 interface was detected and working
correctly on either M.2-C1 (LED9) or M.2-C2 (LED11). It will indicate whether a SATA or PCIe
signal has been detected. Both M.2 not support SATA interface.
M.2 Active
LED Indicator
LED Color
Definition
Off
Off (Normal)
Green
On (SATA)
