Name: Biostar A520MH 3.0
Brand: Biostar
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Chapter 2: Hardware installaon | 17

A520MH 3.0

2.7 Headers & Connectors

ATX: 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

ATX_12V_2X4: ATX Power Source Connector

The connector provides +12V to the CPU power circuit. If the CPU power plug is 4-pin, please

plug it into Pin 1-2-5-6 of ATX_12V_2X4.

Pin Assignment

1 +12V

2 +12V

3 +12V

4 +12V

5 Ground

6 Ground

7 Ground

8 Ground

Note

Before you power on the system, please make sure that both ATX and ATX_12V_2X4 connectors

have been plugged-in.

Insucient power supplied to the system may result in instability or the peripherals not funconing

properly. Use of a PSU with a higher power output is recommended when conguring a system with

more power-consuming devices.

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Biostar A520MH 3.0 Specifications

General