Biostar B350GT3 Версия 6.1 [14/72] Headers connectors

14 | Chapter 2: Hardware installaon

BIOS_SW1: Dual BIOS Switch

The Dual BIOS Switch allows you to choose one of the BIOS ROMs (ROM1/ROM2) for boot up.

Main BIOS (ROM1) Enabled

The LED indicator (ROM1_LED) will light

and the Main BIOS is enabled.

Backup BIOS (ROM2) Enabled

The LED indicator (ROM2_LED) will light

and the Backup BIOS is enabled.

Note

 Donotusethisswitchwhenyoursystemispower-on.



BeforeashingBIOSROMs,pleasemakesurethisswitchissettotheBIOSROMwhichyouwantto

update.

2.7 Headers & Connectors

ATXPWR1: ATX Power Source Connector

For beer compability, we recommend to use a standard ATX 24-pin power supply for this

connector. Make sure to nd the correct orientaon 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