I bought the K2579 and I have a doubt. I note that the electrolytic capacitor has polarity (ok) but the capacitor (C1) can be placed in any position? Does not have polarity?
Its correct Capacitor C1 is an ceramic one. it has no polarity. C2 is electrolytic so it has an polarity.
For more info see wikipedia.
en.wikipedia.org/wiki/Capacitor