User Guide
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System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters and 
save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chipset). 
Phoenix-Award BIOS™ installed in the Flash ROM
 of the motherboard is a custom version of an industry standard BIOS. The BIOS 
provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports. 
Most BIOS settings of AX45F-4D Series have been optimized by AOpen’s R&D engineering team. But, the default setting of BIOS still 
can’t fine-tune the chipset controlling entire system. Therefore, the rest of this chapter intends to guide you the process of configuring 
your system setup. 
To enter to BIOS setup menu, press <Del> when POST (Power-On Self Test)
 screen is shown on your monitor. 
Note:  Because the BIOS code is the most often 
changed part of the motherboard design, the BIOS 
information contained in this manual may be different 
with actual BIOS that come with your motherboard. 










