Please, does someone can explain to me the exact characteristics need to have the power adapter for Step?
Hi @marcelloserafinovisc and welcome to Backstage. Great to have you join us here 
The manual states that it accepts “9-18V DC, 500mA, centre negative (also accepts centre positive)”. If there is something that is not clear about that or you have more questions, don’t hesitate to reply!
Hi Dan, thanks you so much. I’ve read that 500mA is the minum, but also more is ok. It is correct? Thanks again, have a nice day