Please use Google or some other search engine and use the search string "6 wire stepper motor"
The very first link in the list that pops up is Arduino 6 wire Stepper Motor Tutorial. There are more than a million other hits with that search string.
The key words in your question that makes it clear that this is a stepper motor rather than a servo is "200 steps". Servo motors are a continuous device rather than having discrete steps like a stepper does.
Many servo motors also have 5 or 6 wires: 2 wires for the motor and 3 or 4 wires for the potentiometer or quadrature encoder that tells the controller how far the motor has moved. Servo motors require a completely different and much more complicated driver system than a stepper. The advantage of servo motors over stepper motors are many: higher resolution, capable of MUCH higher power, easily scaled up or down in size. All of those advantages are offset by the much more complicated controller required.
But you have a stepper motor.