Supermicro H12SSW-NT - Page 43

43
Chapter 2: Installation
Main Power Supply Connector (JPWR2)
The primary power supply connector (JPWR2) is an ATX power connector that the power
supply plugs into directly.
ATX Power 24-pin Connector
Pin Denitions
Pin# Denition Pin# Denition
13 +3.3V 1 +3.3V
14 -12V 2 +3.3V
15 Ground 3 Ground
16 PS_ON 4 +5V
17 Ground 5 Ground
18 Ground 6 +5V
19 Ground 7 Ground
20 Res (NC) 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 Ground 12 +3.3V
12V 8-pin Auxilliary Power Connector (JPWR1)
JPWR1 is an 8-pin ATX power input to provide auxiliary power to the processor. Refer to the
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12V 8-pin Power Connector
Pin Denitions
Pins Denition
1 through 4 Ground
5 through 8 +12V
Power SMB Header (PWRI2C)
Power System Management Bus (I2C) header monitors power supply, fan and system
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Power SMB Header
Pin Denitions
Pin# Denition
1 Clock
2 Data
3 PWR Fail
4 Ground
5 +3.3V