APU2C4 — LED blinks 5 times …

I bought a APU2C4 Board (from the swiss company “PC Engines GmbH”) and multiple components because I want to build a custom pfSense router.

I’ve ordered the device several weeks ago and haven’t used it until now. That’s because I made a few mistakes (which I want to write now):

  • Mistake: I used a power supply with 12V and 2A from China.
  • Visible by: The LED on the back of the device blinks 5 times — then no more again.
  • Solution: Use a 12V and 3A power supply.
  • Mistake: I used a…