Contents

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

iv

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

iv

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

vi

A55BM-A/USB3 specifications summary.................................................................

vi

Product introduction

1.1

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

1-1

1.2

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

1-2

1.3

Accelerated Processing Unit (APU)............................................................

1-4

1.4

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

1-7

1.5

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

1-10

1.6

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

1-11

1.7

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

1-13

1.8

Software support.........................................................................................

1-21

BIOS information

2.1

Managing and updating your BIOS.............................................................

2-1

2.2

BIOS setup program.....................................................................................

2-5

2.3

My Favorites..................................................................................................

2-9

2.4

Main menu...................................................................................................

2-10

2.5

Ai Tweaker menu.........................................................................................

2-11

2.6

Advanced menu..........................................................................................

2-12

2.7

Monitor menu..............................................................................................

2-12

2.8

Boot menu...................................................................................................

2-13

2.9

Tools menu..................................................................................................

2-14

2.10

Exit menu.....................................................................................................

2-14

Appendices

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

A-1

ASUS contact information......................................................................................

A-4

iii