Gigabyte 6EA manual Main Clock JP2 JP3 JP4, Cmos RTC & ISA CFG Cmos Sram

Hardware Installation

DIP SWITCH (SW) FREQ. EXT.CLK. INT.CLK.

1	2	3	4	RATIO	MHz	MHz	CPU Type
OFF	OFF	ON	ON	3.5	66	233	Pentiumâ II 233 MHz
ON	ON	OFF	ON	4	66	266	Pentiumâ II 266 MHz
OFF	ON	OFF	ON	4.5	66	300	Pentiumâ II 300 MHz
ON	OFF	OFF	ON	5	66	333	Pentiumâ II 333 MHz
OFF	OFF	OFF	ON	5.5	66	366	Pentiumâ II 366 MHz
MAIN CLOCK				JP2		JP3		JP4
	66MHz			1-2		1-2		1-2
	75MHz			1-2		2-3		1-2
	83MHz			2-3		2-3		2-3

MThe 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.

MDanger of explosion if battery is incorrectly replaced.

MReplace only with the same or equivalent type recommended by the manufacturer.

MDispose of used batteries according to the manufacturer’s instructions.

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