Led Indicators - Supermicro SuperServer SYS-421GU-TNXR User Manual

CPLD JTAG Enable Jumper
Use jumpers JPFR1, JPFR2, and JPFR3 to enable CPLD (Complex Programmable Logic
Device) JTAG support. Connect a cable to JPFR1 to support CPLD JTAG. See the table
below for jumper settings.

4.4 LED Indicators

Network LAN LEDs
The Ethernet ports each have two LEDs. One LED indicates activity when flashing green.
The other may be green, amber or off to indicate the speed of the connection.
Dedicated BMC LAN LEDs
A dedicated BMC LAN port is also included on the motherboard. The amber LED on the right
of the BMC LAN port indicates activity, while the LED color on the left indicates the speed
of the connection.
BMC Link LED
Color
Off
Green
Amber
Unit ID LED
The front UID indicator is located at LED29 to provide easy identification of the system.
CPLD JTAG Enable Jumper
Jumper Settings
Jumper Setting Definition
Closed CPLD JTAG Enabled (Default)
Open CPLD JTAG Disabled
LAN LED (Speed Indicator)
Color Definition
Green 10Gbps
Amber 1Gbps
Off 100Mbps or less
Definition
Link LED
(speed)
No Connection
100 Mb/s
1 Gb/s
Chapter 4: Motherboard Connections
Activity LED
IPMI LAN
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