Decisio DEC750 - wrong power adapter used - wont turn on

[valic]

Hi,

During the cleanup of my home lab, did accidentally plugged in the ASRock DeskMini X300 power adapter in DEC750 🙈🐒 And vice versa.

ASRock adapter is 19V, the DEC750 is 12V.

the DEC750 had been plugged in maybe for 15-30 minutes with the wrong charger. After that, it won't turn on.

What is expected to happen in that case?  I do plan to buy multimeter to check the adapter, and motherboard, but would be helpful if someone already had same case, or Deciso tested over-voltage.

Tnx