Supermicro SuperServer SYS-111C-NR - Page 56

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Chapter 4: Motherboard Connections
Information LED (OH/Fan Fail/PWR Fail/UID LED)
The Information LED (OH/Fan Fail/PWR Fail/UID LED) connection is located on pins 7 and
8 of JF1. The LED on pin 7 is active when the UID switch on the rear I/O panel is pressed.
The LED on pin 8 provides warnings of overheat, power failure, or fan failure. Refer to the
table below for more information.
Information LED-UID/OH/PWR Fail/Fan Fail LED
Pin Denitions (JF1)
Status Description
Solid Red An overheat condition has occured. This may be caused by cable congestion.
Blinking Red (1Hz) Fan failure: check for an inoperative fan.
Blinking Red (0.25Hz) Power failure: check for a non-operational power supply.
Solid Blue
Local UID is activated. Use this function to locate a unit in a rack mount
environment that might be need of service.
Blinking Blue (300msec)
Remote UID is on. Use this function to identify a unit from a remote location
that might be in need of service.
NIC1/NIC2 (LAN1/LAN2)
The NIC (Network Interface Controller) LED connection for LAN port 1 is located on pins
11 and 12 of JF1, and LAN port 2 is on pins 9 and 10. Attach the NIC LED cables here to
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LAN1/LAN2 LED
Pin Denitions (JF1)
Pin# Denition
9 NIC 2 Activity LED
11 NIC 1 Activity LED
HDD LED
The HDD LED connection is located on pins 13 and 14 of JF1. Attach a cable to pin 14 to
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HDD LED
Pin Denitions (JF1)
Pins Denition
13 3.3V Stdby
14 HDD Active