AXIOMTEK SBC81872, Руководство пользователя

Страница: 26 / 73

SBC81872 Socket479 All-in-One CPU Card Series User’s Manual
Hardware Description
20
Power LED
This 2-pin connector, designated at Pins 1, 5 and of CN10 ,
connects the system power LED indicator to its respective
switch on the case.
Pin 1 is +, and pin 5 is assigned as -. The
Power LED lights up when the system is powered ON.
External Speaker and Internal Buzzer Connector
Pins 2, 4, 6, and 8 of CN10 connect to the case-mounted
speaker unit or internal buzzer. Short pins 4-6 when
connecting the CPU card to an internal buzzer. When
connecting an external speaker, set these jumpers to
Open
and install the speaker cable on pin 8 (+) and pin 2 (-).
System Reset Switch
Pins 17 & 18 of CN10 connect to the case-mounted reset
switch and allow rebooting of your computer instead of turning
OFF the power switch. This is a preferred method of rebooting
in order to prolong the life of the system
’
s power supply.
HDD Activity LED
This connector extends to the hard drive activity LED on the
control panel. This LED will flash when the HDD is being
accessed.
Pins 19 & 20 of CN10 connect the hard disk drive
and the front panel HDD LED. Pins 19 is -, and pin 20 is
assigned as +.
Keylock
Pin 7 & 9 of CN10 connect to the case
’
s keyboard lock
connector. When connecting the keyboard lock connector on to
CN10 , Pin 7 is designated as positive (+) pole and Pin 9 as
the negative(-) pole
Power switch
This 2-pin connectoris designed at Pin13 and Pin 14 of CN10
connects the ATX power button of the front panel to the
SBC81872 CPU board. Allow user controlling the power on/off