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13S1472-001-01 http://www.tyan.com
3.3 CMOS RTC
CMOS RTC includes an internal battery and Real Time Clock circuit. It
provides the date and the time for the system. Normally the life span of a
RTC internal battery is 10 years. When replacing, you should use the same
model.
3.4 Speaker Connector Installation
S1472 provides a 4-Pin header (J48) to connect the speaker. The polarity
can go either way.
3.5 Turbo Switch
The front panel on your case may have a turbo switch to control system
speed when slower program execution is required for software developed
in the old XT days.
You can connect the chassis turbo switch to J50 on the mainboard. The
430VX chipset doesn't support a hardware turbo function so this switch will
only turn on or off the turbo LED.
3.6 Turbo LED Connector Installation
The TURBO LED on the front case panel can indicate the current speed
status of the system. The TURBO LED connector should be installed to
J51 in the correct direction.