Dostal pry tafku kdyz byl najumperovany na 12v a dostal tak 2-3 minutky 48v. Dle navodu by to mela deska prezit, ale ted jde o to jestli to chapou jako celek, nebo ze papa pojistky ci stabilizatore. V navodu je to psany takhle
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RouterBOARD 500 series boards are equipped with a reliable 24W onboard power supply that accepts a wide
range of input voltage from either the power jack (5.5mm outside and 2mm inside diameter, female, pin
positive plug) or the first Ethernet port. Both power inputs are always active. JP3 and JP4 choose input
voltage (1-2 for 25..60V DC, 2-3 for 6..22V DC). Note that because of wire resistance, PoE requires higher
voltage (it is recommended to use 11V minimum). The low voltage mode has overvoltage protection circuit,
so you will not damage the board if jumpers are set incorrectly, but the power is within 6..60 V DC range.