User Guide
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AX45F-4D Series......................................................................................................................................1 
What’s in this manual .................................................................................................................................................................... 2 
You Must Notice ............................................................................................................................................................................ 8 
Before You Start ............................................................................................................................................................................ 9 
Overview ..................................................................................................................................................................................... 10 
AX45F-4D Series Comparison Table .......................................................................................................................................... 11 
Feature Highlight ......................................................................................................................................................................... 12 
Quick Installation Procedure ....................................................................................................................................................... 17 
Motherboard Map ........................................................................................................................................................................ 18 
Block Diagram ............................................................................................................................................................................. 19 
Hardware Installation ........................................................................................................................ 20 
About “User Upgrade Optional” and “Manufacture Upgrade Optional”… ................................................................................... 21 
EzColor........................................................................................................................................................................................ 22 
CPU Installation........................................................................................................................................................................... 24 
CPU Fan Installation ................................................................................................................................................................... 26 
CPU Over-current Protection ...................................................................................................................................................... 28 
AOpen “Watch Dog ABS”............................................................................................................................................................ 30 
Full-range Adjustable CPU Core Voltage .................................................................................................................................... 31 
CPU and System Fan Connector (with H/W Monitoring) ............................................................................................................ 33 










