About this guide Asus prime Asus M3A78

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Safety information

Electrical safety

•  To prevent electrical shock hazard, disconnect the power cable from the electrical outlet 

before relocating the system.

•  When adding or removing devices to or from the system, ensure that the power cables 

for the devices are unplugged before the signal cables are connected. If possible, 

disconnect all power cables from the existing system before you add a device.

•  Before connecting or removing signal cables from the motherboard, ensure that all 

power cables are unplugged.

•  Seek professional assistance before using an adapter or extension cord. These devices 

could interrupt the grounding circuit.

•  Ensure that your power supply is set to the correct voltage in your area. If you are not 

sure about the voltage of the electrical outlet you are using, contact your local power 


•  If the power supply is broken, do not try to fix it by yourself. Contact a qualified service 

technician or your retailer.

Operation safety

•  Before installing the motherboard and adding devices on it, carefully read all the manuals 

that came with the package.

•  Before using the product, ensure that all cables are correctly connected and the power 

cables are not damaged. If you detect any damage, contact your dealer immediately.

•  To avoid short circuits, keep paper clips, screws, and staples away from connectors, 

slots, sockets and circuitry.

•  Avoid dust, humidity, and temperature extremes. Do not place the product in any area 

where it may become wet.

•  Place the product on a stable surface.
•  If you encounter technical problems with the product, contact a qualified service 

technician or your retailer.

About this guide

This user guide contains the information you need when installing and configuring the 


How this guide is organized

This guide contains the following parts:

•  Chapter 1: Product introduction

This chapter describes the features of the motherboard and the new technology it 


•  Chapter 2: BIOS information 

This chapter tells how to change system settings through the BIOS Setup menus. 

Detailed descriptions of the BIOS parameters are also provided.