Manual

iii

Contents

Contents ...................................................................................................... iii

Notices ......................................................................................................... vi

Safety information ..................................................................................... vii

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

P7P55D LE specications summary ......................................................... ix

Chapter 1: Product introduction

1.1 Before you proceed ..................................................................... 1-1

1.2 Motherboard overview ................................................................. 1-2

1.2.1 Motherboard layout ......................................................... 1-2

1.2.2 Layout contents ............................................................... 1-2

1.3 Central Processing Unit (CPU) ................................................... 1-3

1.4 System memory ........................................................................... 1-8

1.4.1 Overview ......................................................................... 1-8

1.4.2 Memory congurations .................................................... 1-9

1.5 Expansion slot ............................................................................ 1-16

1.5.1 Installing an expansion card ......................................... 1-16

1.5.2 Conguring an expansion card ..................................... 1-16

1.5.3 PCI slots ........................................................................ 1-16

1.6 Jumpers ...................................................................................... 1-17

1.7 MemOK! switches ...................................................................... 1-18

1.8 Connectors ................................................................................. 1-19

1.8.1 Rear panel connectors .................................................. 1-19

1.8.2 Internal connectors ....................................................... 1-20

1.9 Installing an operating system ................................................. 1-26

1.10 Support DVD information .......................................................... 1-26

1.10.1 Running the support DVD ............................................. 1-26

Chapter 2: BIOS setup 2-1

2.1 Managing and updating your BIOS ............................................ 2-1

2.1.1 ASUS Update .................................................................. 2-1

2.1.2 ASUS EZ Flash 2 ............................................................ 2-2

2.1.3 ASUS CrashFree BIOS 3 utility ...................................... 2-3

2.2 BIOS setup program .................................................................... 2-4

Entering BIOS Setup at startup ...................................................... 2-4

Entering BIOS Setup after POST ................................................... 2-4