14 | Chapter 2: Hardware installation
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 flashing 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 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 5V
22
+5V
10
+12V
23
+5V
11
+12V
24
Ground
12
+3.3V
Summary of Contents for B350GT3
Page 6: ...6 Chapter 1 Introduction 1 5 Motherboard Layout Note represents the 1st pin...
Page 39: ...FCC FCC 15 Class B BIOSTAR BIOSTAR BIOSTAR CE 2004 108 CE 2006 95 CE 1999 05 CE...
Page 41: ...3 B350GT3 X370GT3 1 1 0 45 1 2 Serial ATA x4 ATX I O x1 x1 x1...
Page 44: ...6 1 5 1...
Page 45: ...7 B350GT3 X370GT3 2 1 CPU 1 CPU 2 90 3 CPU CPU...
Page 46: ...8 4 CPU CPU 2 2 A 1 2...
Page 47: ...9 B350GT3 X370GT3 B 1 2 CPU CPU CPU CPU...
Page 56: ...18 2 8 LED LED LED RACING GT 3 3 1 RGB LED 2 MOSFET LED 3 LED x7...
Page 62: ...24 UEFI BIOS eHot Line eHot Line Send Send Do Not Send Save As...
Page 64: ...26 UEFI BIOS RACING GT Utility RACING GT 1 2 3 4...
Page 67: ...UEFI BIOS 29 B350GT3 X370GT3 1 CPU 2 3 CPU 4 CPU 5 6 7...