User Guide

Hardware Installation
2-15
2.8.3 Disabling the Onboard Super I/O Controller
The board is preset by the manufacturer
with the onboard I/O controller enabled.
In case you wish to use an external I/O
controller, you need to disable the
onboard I/O before the external I/O card
functions. To disable, you need to reset
jumper JP6 to 2-3.
2.8.4 Setting the Keyboard Clock
By default, the keyboard clock is set to 8
MHz. However, you may increase it to
12 MHz by simply resetting jumper
CN15 to 2-3.
2.8.5 Disabling the PS/2 Mouse Function
The PS/2 mouse function is normally
enabled and occupies IRQ12. To
reassign IRQ12 to another function, you
need to disable the PS/2 mouse function
by setting jumper JP3 open and
changing the BIOS setting. For detailed
information on BIOS, see Chapter 3.
Enabled (default)
Disabled
8 MHz (default)
12 MHz
Enabled (default)
Disabled
JP6
CN15
JP3