Is stepstick a drop in for pololu?

Hey guys,
So I blew one of my pololu's because I'm an idiot and bought a stepstick to replace it because I wanted it fast. The one I bought is a stepstick A4988. Will I need to change anything for my step per mm calculation? Also is it still .4vref to output a max of 1A? I really dont want to blow this one too.

Thanks