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TABLE OF CONTENTS
Preface ................................................................................................................................................................ 7
About this manual....................................................................................................................................................................... 7
Safety notices................................................................................................................................................................................ 7
Electrostatic discharge............................................................................................................................................................................7
Lithium cell battery.................................................................................................................................................................................8
Where to get more product information ............................................................................................................................... 8
Chapter 1: Introduction .................................................................................................................................... 9
Product models.......................................................................................................................................................................................9
Board layout ................................................................................................................................................................................10
General specifications......................................................................................................................................................................... 12
Chipset overview ....................................................................................................................................................................... 15
Main features of the 5500/5600 series processor and the 5520 chipset ............................................................................... 16
Special features...........................................................................................................................................................................16
Recovery from AC power loss........................................................................................................................................................... 16
PC health monitoring ................................................................................................................................................................16
Fan status monitor with firmware control...................................................................................................................................... 16
Environmental temperature control ................................................................................................................................................ 17
ACPI features...............................................................................................................................................................................17
Slow blinking LED for suspend-state indicator.............................................................................................................................. 17
Main switch override mechanism.................................................................................................................................................... 17
Power supply...............................................................................................................................................................................18
Super I/O......................................................................................................................................................................................18
Overview of the Nuvoton WPCM450 controller.................................................................................................................18