Thanks for your help, I was hoping to use this driver as I have just paid 22GBP for it. Maybe I should return.

Using 12v 2amp power

3D Printer High Torque 17 Stepper Motor 300mN 1.5A 2-phase 4-wire

Specifications:

Dimensions: 42 x 42 x 34mm

Rated current (single-phase): 1.5A DC

Rated voltage: 4.8V

Power rating: 6.6W

Resistance: 3.2Ω

Step angle: 1.8 °

Static torque: 320mN.m (I = 1.5A)

Location moment: 12mN.m

Moment of inertia: 38g.cm2

The maximum load starting frequency: ≥1500pps

The maximum no-load operating frequency: ≥8000pps

Inductance: 3MH

Working conditions:

Ambient temperature: -20~50 °C

Relative humidity: 90% MAX

Mounting position: shaft horizontal or vertical mounting

Motor wiring: one meter