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1) ATX_12V (+12V Power Connector)

This connector (ATX _12V) supplies the CPU operation voltage (Vcore).

If this " ATX_ 12V connector" is not connected, system cannot boot.

4

2

Pin No.

Definition

1

GND

3

1

 

 

2

GND

 

 

3

+12V

 

 

4

+12V

2) ATX (ATX Power)

AC power cord should only be connected to your power supply unit after ATX power cable and other related devices are firmly connected to the mainboard.

11

1

Pin No.

Definition

Pin No.

Definition

1

3.3V

11

3.3V

 

 

 

 

2

3.3V

12

-12V

 

 

3

GND

13

GND

 

 

4

VCC

14

PS_ON(soft on/off)

 

 

5

GND

15

GND

 

 

6

VCC

16

GND

 

 

7

GND

17

GND

20

10

8

Power Good

18

-5V

9

5V SB (stand by +5V)

19

VCC

 

 

 

 

10

+12V

20

VCC

3) CPU_FAN (CPU FAN Connector)

Please note, a proper installation of the CPU cooler is essential to prevent the CPU from running under abnormal condition or damaged by overheating.The CPU fan connector supports Max. current up to 600 mA.

1

Pin No.

Definition

1

GND

 

2

+12V

 

3

Sense

8S661FXM-RZ Motherboard

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Intel 8S661FXM-RZ user manual ATX12V +12V Power Connector, ATX ATX Power, Cpufan CPU FAN Connector