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686BX
1
2
3
4
OFF
OFF
ON
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
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OFF
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OFF
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OFF
ON
M
The CPU is a sensitive electric component and it can be easily
damaged by static electricity, so users must keep it away from metal
surface when the CPU is installed onto main board.
3.6. CMOS RTC & ISA CFG CMOS SRAM
There're RTC & CMOS SRAM 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
SRAM 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.
M Danger of explosion if battery is incorrectly replaced.
M Replace only with the same or equivalent type recommended by the
manufacturer.
M Dispose of used batteries according to the manufacturer's instructions.
3.7. SPEAKER CONNECTOR INSTALLATION
3.5
66
233
4
66
266
4.5
66
300
5
66
333
5.5
66
366
3
100
300
3.5
100
350
4
100
400
4.5
100
450
3-6
Pentium ® II 233 MHz
Pentium ® II 266 MHz
Pentium ® II 300 MHz
Pentium ® II 333 MHz
Pentium ® II 366 MHz
Pentium ® II 300 MHz
Pentium ® II 350 MHz
Pentium ® II 400 MHz
Pentium ® II 450 MHz
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