Supermicro SuperServer SYS-521GE-TNRT User Manual page 64

LAN1/LAN2 (NIC1/NIC2)
The NIC (Network Interface Controller) LED connection for LAN Port 1 is located on Pin 6 of
JF1, and the connection for LAN Port 2 is on Pin 5. Refer to the table below.
HDD Activity LED
The HDD activity LED connection is located on Pin 7 of JF1. When this LED is blinking green,
it indicates HDD activity. Refer to the table below.
Standby Power LED
The LED indicator for standby power is located on Pin 8 of JF1. If this LED is on, standby
power is on.
RoT (Root of Trust) Power LED
The Power LED for RoT (Root of Trust) connection is located on Pin 9 of JF1. If this LED is
on, power for the RoT chip is on.
Standby Power
A Standby Power (I C) connection is located on Pin 10 ~ Pin 14 of JF1 to provide power to
2
the system when it is in standby mode. Refer to the table below for pin definitions.
LAN1/LAN2 LED
LED States
Color State
NIC 2: Blinking green LAN 2: Active
NIC 1: Blinking green LAN 1: Active
HDD LED
LED State
Color State
Blinking Green HDD Active
3.3V Standby PWR
Pin Definitions
Pin# Definition
10 P3V3 Standby
11 Ground
12 I²C Data
13 I²C Clock
14 Ground
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Chapter 4: Motherboard Connections