Contents

Notices ...........................................................................................

vi

Safety information .........................................................................

vii

About this guide ............................................................................

viii

Conventions used in this guide ...........................................

viii

Typography..........................................................................

viii

A8S-X specifications summary .......................................................

ix

Chapter1: Product introduction

 

1.1

Welcome! ...........................................................................

1-2

1.2

Package contents ...............................................................

1-2

1.3

Special features..................................................................

1-3

 

1.3.1

Product Highlights ..................................................

1-3

 

1.3.2

Unique ASUS features ...........................................

1-4

1.4

Before you proceed ............................................................

1-5

1.5

Motherboard overview ........................................................

1-6

 

1.5.1

Motherboard layout ................................................

1-6

 

1.5.2

Placement direction ...............................................

1-7

 

1.5.3

Screw holes ...........................................................

1-7

1.6

Central Processing Unit (CPU)...........................................

1-8

 

1.6.1

Overview ................................................................

1-8

 

1.6.2

Installing the CPU ..................................................

1-9

1.7

System memory ...............................................................

1-10

 

1.7.1

DIMM sockets location .........................................

1-10

 

1.7.2

Memory configurations ........................................

1-10

 

1.7.3

Installing a DIMM ..................................................

1-11

1.8

Expansion slots .................................................................

1-11

 

1.8.1

Standard interrupt assignments ............................

1-11

 

1.8.2

IRQ assignments for this motherboard ................

1-12

 

1.8.3

PCI slots ..............................................................

1-12

 

1.8.4

PCI Express x1 slot .............................................

1-13

 

1.8.5

PCI Express x16 slot ...........................................

1-13

1.9

Jumpers............................................................................

1-14

1.10

Connectors .......................................................................

1-16

 

1.10.1

Rear panel connectors .........................................

1-16

 

1.10.2

Internal connectors ..............................................

1-17

iii