Supermicro 2027R-E1CR24L User Manual page 66

S S S
UPER TORAGE
Power On LED
The Power LED connector is located
on pins 15 and 16 of JF1. This con-
nection is used to provide LED indica-
tion of power being supplied to the
system. See the table on the right for
pin definitions.
NMI Button
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.
Fan Headers
There are eight fan headers on the
serverboard, all of which are 4-pin
fans. Pins 1-3 of the fan headers are
backward compatible with the tradi-
tional 3-pin fans. (Fan speed control
is supported with 4-pin fans only.)
See the table on the right for pin defi-
nitions. The onboard fan speeds are
controlled by Thermal Management
via an IPMI interface.
Overheat/Fan Fail LED
The JOH1 header is used to connect
an LED indicator to provide warnings
of chassis overheating and fan failure.
This LED will blink when a fan failure
occurs. Refer to the table on the right
for pin definitions.
YSTEM 2027R-E1CR24L User's Manual
Pin Definitions (JF1)
Pin#
15
16
Pin Definitions (JF1)
Pin#
19
20
Pin#
1
2
3
4
Pin#
1
2
State
Solid
Blinking
5-18
Power LED
Definition
3.3V
Signal
NMI Button
Definition
Control
Ground
Fan Header
Pin Definitions
(FAN1-8)
Definition
Ground (Black)
+12V (Red)
Tachometer
PWR Modulation
Overheat LED
Pin Definitions
Definition
5vDC
OH Active
OH/Fan Fail LED
Status
Message
Overheat
Fan Fail