Biostar B660GTA - Инструкция по эксплуатации - Страница 18

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Chapter 2: Hardware installation

2.6 Jumper & Switch Setting

The illustration shows how to set up jumpers. When the jumper cap is placed on pins, the 

jumper is “close”, if not, that means the jumper is “open”. 

Pin opened

Pin closed

Pin 1-2 closed

JCMOS1: Clear CMOS Jumper

The jumper allows users to restore the BIOS safe setting and the CMOS data. Please carefully 

follow the procedures to avoid damaging the motherboard.

Pin 1-2 Open:

Normal Operation (Default)

Pin 1-2 Short:

Clear CMOS data

Clear CMOS Procedures:

1.  Remove AC power line.

2.  Set the jumper to “Pin 1-2 short”, you can use a metal object like a screwdriver to touch 

the two pins.

3.  Wait for five seconds.

4.  After clearing the CMOS values, be sure the jumper is “Pin 1-2 open”.

5.  Power on the AC.

6.  Load Optimal Defaults and save settings in CMOS.

2.7 Headers & Connectors

ATX: ATX Power Source Connector

For better compatibility, we recommend to use a standard ATX 24-pin power supply for this 

connector. Make sure to find the correct orientation before plugging the connector.

Pin Assignment

Pin Assignment

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

NC

8

PW_OK

21

+5V

9

Standby Voltage+5V

22

+5V

10

+12V

23

+5V

11

+12V

24

Ground

12

+3.3V