Supermicro SUPERSERVER 4028GR-TR, User Manual

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SUPERSERVER 4028GR-TR(T)(2) User's Manual
HDD LED/ UID Button
The HDD LED connection is pin 14 of JF1.
It lights the LED upon HDD activity.
The pin 13 connection carries the signal
from the UID button on the front panel. It
lights the UID LED (on pin 7 of JF1). The
UID button toggles on or off the UID LED
to assist a technician in finding the unit
among other servers in a rack.
Power On LED
The Power On LED connector is located
on pins 15 and 16 of JF1. This connection
is used to provide LED indication of power
being supplied to the system. See the table
on the right for pin definitions.
Power LED
Pin Definitions
(JF1)
Pin# Definition
15 +3.3V
16 Control
HDD/UID LED
Pin Definitions
(JF1)
Pin# Definition
13 UID Signal/3.3V
14 HDD Activity
NMI Header
The non-maskable interrupt button header
is located on pins 19 and 20 of JF1. Refer
to the table on the right for pin definitions.
NMI Button
Pin Definitions
(JF1)
Pin# Definition
1 Control
2 Ground