User`s manual

SBC86822 Series All-In-One Mini ITX Board User’s Manual
Jumpers and Connectors
37
 External Speaker and Internal Buzzer Connector
Pin 2, 4, 6 and 8 can be connected to the case-mounted speaker
unit or internal buzzer. While connecting the CPU card to an
internal buzzer, please short pins 2-4; while connecting to an
external speaker, you need to set pins 2-4 to Open and connect the
speaker cable to pin 8 (+) and pin 2 (-).
 ATX Power On/Off Button
This 2-pin connector denoted as Pin 9 and 10 connects the front
panel’s ATX power button to the CPU card, which allows users to
control ATX power supply to be power on/off.
 System Reset Switch
Pin 11 and 12 can be connected to the case-mounted reset switch
that reboots your computer instead of turning OFF the power switch.
It is a better way to reboot your system for a longer life of the
system’s power supply.
 HDD Activity LED
This connection is linked to hard drive activity LED on the control
panel. LED flashes when HDD is being accessed. Pin 13 and 14
connect the hard disk drive to the front panel HDD LED, Pin 13
assigned as -, and Pin 14 as +.
2.4. 15 CompactFlash
TM
Socket (CNS1)
The board is equipped with a CompactFlash
TM
disk type-II socket on
the solder side that supports the IDE interface CompactFlash
TM
disk
card with DMA mode supported. The socket is especially designed to
avoid any incorrect installation of the CompactFlash
TM
disk card.
When installing or removing the CompactFlash
TM
disk card, please
make sure that the system power is off. The CompactFlash
TM
disk card
is defaulted as the C: or D: disk drive in your PC system.
Pin Signal Pin Signal
1 GND 26 CD1-
2 Data 3 27 Data 11
3 Data 4 28 Data 12