I'm trying to make a CNC machine out of 2 dvd drive stepper motors. One of my stepper motors is completely normal and as seen in every video I've seen on the topic. The other looks like this (see pictures). The laser diode assembly moves on some gears connected to a motor which is connected to a board. the board has 4 contacts but according to my multimeter, only one pair is connected. Is this a stepper motor? Also, how do I get this to work with my build?