Connectors - PC Engines apu1c4 Manual

Connectors

J1 SIM
J2 power / reset
J3 COM2
(J4 I2C / LED)
J5 CMOS reset
apu system board
(bottom side) – SIM socket for 3G modem installed in miniPCIe J16.
Pins 1 – 2 = power button; pins 3 – 4 = system reset
3.3V serial port (RXD / TXD only).
(optional expansion, see schematic for pinout)
Short these pins while power is off to clear RTC / CMOS RAM. Don't
leave jumper permanently as this would drain the battery.
8 7/31/2014