Asus prime Asus M3A78-EM

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Contents

Notices.......................................................................................................... vi
Safety.information...................................................................................... vii
About.this.guide........................................................................................ viii
M3A78-EM specifications summary............................................................ x

Chapter.1:.

Product.introduction

1.1.

Welcome!....................................................................................... 1-2

1.2.

Package.contents.......................................................................... 1-2

1.3.

Special.features............................................................................. 1-2
1.3.1 

Product highlights ........................................................... 1-2

1.3.2 

ASUS unique features .................................................... 1-6

1.3.3 

ASUS stylish features ..................................................... 1-8

1.3.4 

ASUS intelligent overclocking features ........................... 1-8

1.4.

Before.you.proceed...................................................................... 1-9

1.5.

Motherboard.overview................................................................ 1-10
1.5.1 

Motherboard layout ....................................................... 1-10

1.5.2 

Placement direction .......................................................1-11

1.5.3 

Screw holes ...................................................................1-11

1.6.

Central.Processing.Unit.(CPU).................................................. 1-12
1.6.1 

Installing the CPU ......................................................... 1-12

1.6.2 

Installing the heatsink and fan ...................................... 1-14

1.7.

System.memory.......................................................................... 1-16
1.7.1 

Overview ....................................................................... 1-16

1.7.2 

Memory configurations .................................................. 1-16

1.7.3 

Installing a DIMM .......................................................... 1-20

1.7.4 

Removing a DIMM ........................................................ 1-20

1.8.

Expansion.slots........................................................................... 1-21
1.8.1 

Installing an expansion card ......................................... 1-21

1.8.2 

Configuring an expansion card ..................................... 1-21

1.8.3 

PCI slots ........................................................................ 1-24

1.8.4 

PCI Express x1 slot ....................................................... 1-24

1.8.5 

PCI Express x16 slot ..................................................... 1-24

1.9.

Jumpers....................................................................................... 1-25

1.10. Connectors.................................................................................. 1-26

1.10.1  Rear panel connectors .................................................. 1-26
1.10.2  Internal connectors ....................................................... 1-29