User`s manual
www.dfi .comChapter 1 Introduction
3
Table of Contents
Copyright .............................................................................................................2
Trademarks ........................................................................................................2
COM Express Specification Reference ...................................................2
FCC and DOC Statement on Class B .....................................................2
About this Manual ..........................................................................................4
Warranty ............................................................................................................4
Static Electricity Precautions ......................................................................4
Safety Measures ..............................................................................................4
About the Package .........................................................................................5
Chapter 1 - Introduction .............................................................................6
Specifications ................................................................................................6
Features .......................................................................................................... 7
Chapter 2 - Concept ....................................................................... 8
COM Express Module Standards ..............................................................8
Specification Comparison Table ...............................................................9
Chapter 3 - Hardware Installation .............................................. 10
Board Layout ...............................................................................................10
Block Diagram .............................................................................................10
Mechanical Diagram .................................................................................. 11
System Memory ..........................................................................................12
Installing the DIMM Module ........................................................................13
Connectors ...................................................................................................14
CPU Fan Connector .....................................................................................14
BIOS Setting ..............................................................................................14
COM Express Connectors ............................................................................14
COM Express Connectors .......................................................................15
COM Express Connectors Signal Discription ......................................17
Standby Power LED ...................................................................................27
Cooling Option ............................................................................................ 27
Installing HR902-B/BL Series onto a Carrier Board ......................... 28
Chapter 4 - BIOS Setup ............................................................... 31
Overview.......................................................................................................31
AMI BIOS Setup Utility .............................................................................32
Main ..........................................................................................................32
Advanced ................................................................................................... 32
Chipset ......................................................................................................39
Boot...........................................................................................................45
Security ......................................................................................................46
Save & Exit ................................................................................................46
Updating the BIOS ....................................................................................47
Notice: BIOS SPI ROM ............................................................................. 47
Chapter 5 - Supported Software ........................................................... 48
Appendix A - nLite and AHCI Installation Guide ........................... 62
nLite ...............................................................................................................62
AHCI ..............................................................................................................66
Appendix B - Watchdog Sample Code ................................................68
Appendix C - System Error Message ...................................................69
Appendix D - Troubleshooting ................................................................ 70
Appendix E - BIOS Status Code ............................................................ 72