Contents

Notice ................................................................................................................

vi

Safety Information ............................................................................................

vii

Electrical safety......................................................................................

vii

Operation safety.....................................................................................

vii

About This Guide .............................................................................................

viii

Layout in this guide ................................................................................

viii

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

viii

Where to find more information..............................................................

viii

K8U-X specifications summary .........................................................................

ix

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

1-4

1.4

Before You Proceed .................................................................................

1-5

 

Onboard LED ........................................................................................

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 ......................................................................

1-13

1.8

Expansion Slots ......................................................................................

1-13

 

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

1-14

 

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

1-14

 

1.8.3 PCI slots ....................................................................................

1-15

 

1.8.4 AGP SlotDIMM sockets location ................................................

1-15

ASUS K8U-X Motherboard

iii