AOpen AX6BC Quick Installation Guide

Quick Installation Guide
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Setting CPU Frequency
The CPU frequency selection is set by going into:
BOIS Setup à Chipset Features Setup à CPU Clock Frequency
BOIS Setup à Chipset Features Setup à CPU Clock Ratio
Core frequency = Ratio * External bus clock
INTEL Pentium II CPU Core Frequency Ratio External Bus Clock
Pentium II 233 (Klamath) 233MHz = 3.5x 66MHz
Pentium II 266 (Klamath) 266MHz = 4x 66MHz
Pentium II 300 (Klamath) 300MHz = 4.5x 66MHz
Pentium II 333 (Deschutes) 333MHz = 5x 66MHz
Pentium II 350 (Deschutes) 350MHz = 3.5x 100MHz
Pentium II 400 (Deschutes) 400MHz = 4x 100MHz
Pentium II 450 (Deschutes) 450MHz = 4.5x 100MHz
Celeron 266 266MHz= 4x 66MHz
Celeron 300 300MHz= 4.5x 66MHz
Mendocino 300 300MHz= 4.5x 66MHz
Mendocino 333 333MHz= 5x 66MHz
Use <Home> Key to Clear CPU Frequency Setting
If your system hangs or fails to boot because of over-clocking, simply use <Home> key to
restore to the default setting (233MHz). By this smart design, it would be more convenient to
clear CPU frequency setting. For using this function, you just need to press <Home> key first
and then press Power button at the same time. Note that do not release <Home> key until
POST screen appearing .
Connecting CPU Fan
Plug in the fan cable to the 3-pin CPU FAN or FAN
connector. Both of these two fan connectors support
hardware monitoring function, however, you can only
use the CPU FAN connector to control the fan power
ON/OFF.
Battery-less Motherboard
To preserve the earth, AOpen AX6BC implements the world first battery-less motherboard
design. There is no need to have battery for RTC (real time clock) and CMOS Setup as long
as ATX power cable is plugged. In case of the AC power is shutdown or power cord is
removed by accident, the CMOS Setup and system configuration can be restored from
EEPROM, only the system clock needed to be re-set to current date/time.
AGP Ratio
To improve system performance, AX6BC has implemented
this jumper for AGP to synchronize the CPU 100Mhz (or
above) external frequency. We recommend choosing a
better AGP card for overclocking. Some AGP cards can
not take 100MHz bus frequency and may cause
overclocking failure.

AOpen AX6BC Specifications

General

Brand	AOpen
Model	AX6BC
Category	Motherboard
Language	English