Front Panel Connector (Cn1); Power Input Terminal Block (Cn2); Sata Power Connector (Cn5) - AXIOMTEK SBC87842 User Manual

SBC87842 Single Board Computer
2.4.1

Front Panel Connector (CN1)

Pin
1
2
3
4
5
6
7
8
HDD Activity LED
This connection is linked to hard drive activity LED on the control panel. LED flashes
when HDD is being accessed. Pin 1 and 3 connect the hard disk drive to the front panel
HDD LED, pin 3 is assigned as cathode(-) and pin 1 is assigned as anode(+).
System Reset Switch
Pin 5 and 6 connect the case-mounted reset switch that reboots your computer without
turning off the power switch. It is a better way to reboot your system for a longer life of
system power supply.
Power On/Off Button
Pin 7 and 8 connect the power button on front panel to the CPU board, which allows
users to turn on or off power supply.
2.4.2

Power Input Terminal Block (CN2)

The board is equipped with a 3-pin terminal block for 12~24VDC power input.
Pin Signal
1 +
2 NC
3 -
2.4.3

SATA Power Connector (CN5)

This is a 2-pin connector for interfacing to SATA 2.5" HDD power supply.
Pin
1
2
10
Signal
HDDLED+
+3.3V
HDDLED-
+3.3V
HW RST+
HW RST-
PWRSW+
PWRSW-
Signal
+5V
GND
Board and Pin Assignments