1.6.1 Installing the CPU Asus prime Asus M3A78

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3. 

Position the CPU above the socket such that the CPU 

corner with the gold triangle matches the  socket corner 

with a small triangle.

4. 

Carefully insert the CPU into the socket until it fits in place.

The CPU fits only in one correct 

orientation. DO NOT force the CPU into 

the socket to prevent bending the pins 

and damaging the CPU!

Gold triangle

Small triangle

5. 

When the CPU is in place, push down the socket 

lever to secure the CPU. The lever clicks on the side 

tab to indicate that it is locked.

6. 

Install a CPU heatsink and fan following the 

instructions that came with the heatsink package. 

You can also refer to section 1.6.2 Installing 

heatsink and fan for instructions.

7. 

Connect the CPU fan cable to the CPU_FAN connector on the motherboard.

Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if 

you fail to plug this connector.

R

M3A78

M3A78 CPU Fan Connector

CPU_FAN

GN

D

CPU 

FA

N PW

R

CPU 

FA

N IN

CPU 

FA

N PW

M

Chapter 1: Product introduction

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