Headers & Connectors - Biostar B450MHP Manual

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.
ATX_12V_2X2: ATX Power Source Connector
The connector provides +12V to the CPU power circuit.
Note
» » Before you power on the system, please make sure that both ATX and ATX_12V_2X2 connectors
have been plugged-in.
» » Insufficient power supplied to the system may result in instability or the peripherals not functioning
properly. Use of a PSU with a higher power output is recommended when configuring a system with
more power-consuming devices.
16 | Chapter 2: Hardware installation
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
Pin Assignment
1 +12V
2 +12V
3 Ground
4 Ground