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Motherboard Description SY-K7ADA
12
Legacy-Free and Legacy Reduction specification of PC2001.
1-7.1 PS/2 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel of the
motherboard. The +5 V lines to keyboard and mouse connectors are
protected with a fuse that prevents motherboard components from being
damaged when an over-current condition occurs.
Note
The mouse and keyboard can be plugged into either PS/2 connector.
Power to the computer should be turned off before a keyboard or mouse is
connected or disconnected.
The keyboard controller contains code, which provides the traditional
keyboard and mouse control functions, and also supports Power On/Reset
password protection. Power On/Reset password can be specified in the
BIOS Setup program.
The keyboard controller also supports the hot-key sequence
<Ctrl><Alt><Del>, software reset. This key sequence resets the
computer’ s software by jumping to the beginning of the BIOS code and
running the Power On Self Test (POST).
1-8 HARDWARE MONITOR
The hardware monitor subsystem provides instrumentation capabilities.
The features of the hardware monitor subsystem include:
n 2 thermistor input for remote temperature sensing (CPU/System)
n Monitor 4 positive voltages (Vcore/+3.3V/+5V/+12V)
n Monitor 2 fan speeds
n 2 PWM outputs for fan speed control
n Power-on beep warning when CPU core voltage is out of range
n VID4-VID0 monitoring inputs
n Windows 95/98 utility included