IBASE MB839 - Manual (Page 16)

INSTALLATIONS
10 MB839 Series User’s Manual
JP12: System Function Connector
JP12 provides connectors for system indicators that provide light
indication of the computer activities and switches to change the computer
status. JP12 is a 8-pin header that provides interfaces for the following
functions
Pin 1,2: Power LED
The power LED indicates the status of the main power switch.
Pin # Signal Name
1 +5V
2 GND
Pin 3,4: ATX Power ON Switch
Pin 3 & 4 are for “ATX Power Supply On/Off Switch” on the
system that connects to the power switch on the case. When
pressed, the power switch will force the system to power on. When
pressed again, it will force the system to power off.
Pin # Signal Name
3 Power_ON
4 GND
Pin 5, 6: Hard Disk Drive LED Connector
This connector connects to the hard drive activity LED on control
panel. This LED will flash when the HDD is being accessed.
Pin # Signal Name
5 +3.3V
6 -HDD_LED
Pin 7, 8: Reset Switch
The reset switch allows the user to reset the system without turning
the main power switch off and then on again. Orientation is not
required when making a connection to this header.
Pin # Signal Name
7 PM_SYSRST#
8 GND