Hardware Installation
3-7
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Intel Processor all have locked Frequency Multiple, so you can not change
the CPU Frequency Multiple.
Set System Bus Speed SW2: (O:ON / X:OFF)
CPU PCICLK 1 2 3 4 5 6
66/100/
133/Auto
33.3
X X X X O O
66 33.3
O O X X X X
75 37.5
O O O X X X
83 41.6
O O X O X X
100 33.3
O X X X X X
112 37.3
O X O X X X
124 31
X X X O X X
133 33.3
X X X X X X
140 35
X X O O X X
150 37.5
X X O X X X
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Note: We don’t recommend you to set up your system speed to
75,83,112,124,140 or 150MHz because these frequencies are not the
standard specifications for CPU, Chipset and most of the peripherals.
Whether your system can run under 75,83,112,124,140 or 150 MHz
properly will depend on your hardware configurations: CPU, SDRAM,
Cards, etc.
3.6. CMOS RTC & ISA CFG CMOS RAM
There're RTC & CMOS RAM on board; they have a power supply from external
battery to keep the DATA inviolate & effective. The RTC is a REAL-TIME
CLOCK device, which provides the DATE & TIME to system. The CMOS RAM
is used for keeping the information of system configuration, so the system can
automatically boot OS every time. Since the lifetime of internal battery is 5
years, the user can change a new Battery to replace old one after it cannot
work.
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Danger of explosion if battery is incorrectly replaced.
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Replace only with the same or equivalent type recommended by the
manufacturer.
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Dispose of used batteries according to the manufacturer’s instructions.