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GA-686KDX
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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 mainboard.
3.6. CMOS RTC & ISA CFG CMOS SRAM
There're RTC & CMOS SRAM on board, they have a power supply from
internal 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 ISA device system
configuration, so the system can automatically boot OS. every time.
Due to the life-time of RTC internal battery is 5 years, the user can change a
new RTC to replace old one after it can not work. The new one's brand and
type must be same with old one.
3.7. SPEAKER CONNECTOR INSTALLATION
There is always a speaker in AT system for sound purpose. The 4 - Pins
connector J5 is used to connect speaker.
The speaker can work well in both direction of connector when it is installed to
the connector J5 on mainboard.
3.8. HARDWARE RESET SWITCH CONNECTOR INSTALLATION
The RESET switch on panel provides users with HARDWARE RESET
function which is almost the same as power-on/off.
The system will do a cold start after the RESET switch is pushed and
released by user. The RESET switch is a 2 PIN connector and should be
installed to J6 on mainboard.
3.5
66
233
4
66
266
4.5
66
300
5
66
333
5.5
66
366
3-7
Pentiumâ
II 233 MHz
Pentiumâ
II 266 MHz
Pentiumâ
II 300 MHz
Pentiumâ
II 333 MHz
Pentiumâ
II 366 MHz
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