A+ SERVER 1012G-MTF USER'S MANUAL

5-9 Connector Definitions

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 definitions.

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.

ATX Power 24-pin Connector

Pin Definitions

Pin#

Definition

Pin #

Definition

 

 

 

 

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

 

 

 

 

12V 8-pin PWR Connector

Pin Definitions

Pins

Definition

 

 

1 through 4

Ground

5 through 8

+12V

 

 

Required Connection

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 definitions.

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 definitions.

Power Button

Pin Definitions

(JF1)

Pin# Definition

1PW_ON

2Ground

Reset Button

Pin Definitions

(JF1)

Pin# Definition

3Reset

4Ground

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 definitions and status indicators.

OH/Fan Fail LED

Pin Definitions

(JF1)

Pin# Definition

7Vcc

8Control

OH/Fan Fail

LED Status

State

Indication

 

 

Solid

Overheat

Blinking

Fan fail

 

 

5-14

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SUPER MICRO Computer 1012G-MTF user manual Connector Definitions, Power Connectors, Pwon Connector, Reset Connector