Contents Asus prime Asus M3A78-EH

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Contents

Notices ......................................................................................................... vi
Safety information ..................................................................................... vii
M3A78-EH 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 

Innovative ASUS features  .............................................. 1-6

1.4 

Before you proceed ..................................................................... 1-7

1.5 

Motherboard overview ................................................................. 1-8
1.5.1 

Motherboard layout ......................................................... 1-8

1.5.2 

Placement direction ........................................................ 1-9

1.5.3 

Screw holes .................................................................... 1-9

1.6 

Central Processing Unit (CPU) ................................................. 1-10
1.6.1 

Installing the CPU ......................................................... 1-10

1.6.2 

Installing the heatsink and fan ...................................... 1-12

1.7 

System memory ......................................................................... 1-14
1.7.1 

Overview ....................................................................... 1-14

1.7.2 

Memory configurations .................................................. 1-14

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 ................................................................................. 1-27

1.10.1  Rear panel connectors .................................................. 1-27
1.10.2  Internal connectors ....................................................... 1-29