Supermicro H8SCM-F User Manual download pdf (Page 29)

Chapter 2: Installation

2-9

2-7 Connector Deﬁ nitions

Power Connectors

A 24-pin main power supply connector(JPW1)

and three 8-pin CPU PWR connector (JPW2)

on the motherboard. These power connectors

meet the SSI EPS 12V specification. In

addition to the 24-pin ATX power connector,

the 12V 8-pin CPU PWR connector at JPW2

must also be connected to your power

supply. See the table on the right for pin

deﬁ nitions.

Warning: To prevent damage to the power

supply or motherboard, please use a power

supply that contains both a 24-pin and 8-pin

power connectors. Be sure to connect these

connectors to the 24-pin (JPW1) and the

three 8-pin (JPW2) power connectors on the

motherboard. Failure in doing so will void the

manufacturer warranty on your power supply

and motherboard.

Reset Connector

The reset connector is located on pins 3 and

4 of JF1 and attaches to the reset switch on

the computer chassis. See the table on the

right for pin deﬁ nitions.

PW_ON Connector

The PW_ON connector is on pins 1 and 2 of

JF1. This header should be connected to the

chassis power button. See the table on the

right for pin deﬁ nitions.

Overheat/Fan Fail LED (OH)

Connect an LED to the OH connection on

pins 7 and 8 of JF1 to provide advanced

warning of chassis overheating or fan

failure. Refer to the table on the right for pin

deﬁ nitions and status indicators.

ATX Power 24-pin Connector

Pin Deﬁ nitions

Pin# Deﬁ nition Pin # Deﬁ nition

13 +3.3V 1 +3.3V

14 -12V 2 +3.3V

15 COM 3 COM

16 PS_ON 4 +5V

17 COM 5 COM

18 COM 6 +5V

19 COM 7 COM

20 Res (NC) 8 PWR_OK

21 +5V 9 5VSB

22 +5V 10 +12V

23 +5V 11 +12V

24 COM 12 +3.3V

Required Connection

Reset Button

Pin Deﬁ nitions

(JF1)

Pin# Deﬁ nition

3 Reset

4 Ground

Power Button

Pin Deﬁ nitions

(JF1)

Pin# Deﬁ nition

1 PW_ON

2 Ground

OH/Fan Fail LED

Pin Deﬁ nitions

(JF1)

Pin# Deﬁ nition

7 Vcc

8 Control

OH/Fan Fail

LED Status

State Indication

Solid Overheat

Blinking Fan fail

12V 8-pin PWR Connector

Pin Deﬁ nitions

Pins Deﬁ nition

1 through 4 Ground

5 through 8 +12V

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 71 72

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