Like ALL MMD drives the physical size is 3.38" x 2.66"
Motor drive current from 1.05 to 4.00 Amps (resister selected)
Motor drive voltage of 40 Volts
Fixed 16 micro-stepping, 3200 steps per rev. (1.8 degree motor)
Full time active short circuit protection.
Automatic current reduction (1/2 current after 1 second)

POWER REQUIRMENTS
5V (for logic) -- must be between 4.8V and 5.1V for the drive to boot -- current draw is 180mA
24V to 40V (for motor drives) -- must not exceed 45Volts under any condition.

Before a drive is shipped, it is tested in our test fixture where the ambient temperature is raised to 110 degrees F. The drive is then run from 0.1 RPS to 40 RPS continuously for 24 hours.

This 4 Amps at 40 Volts step motor driver provides cool features at a great price.

The current for the drive is set by 6pin 5 element or a 6 pin 3 element resistor SIP.

Motor Drive Current Selector Resistor Chart

------	Ohms	Amps		------	Ohms	Amps
With Resister	330	1.06		With Resister	1800	2.65
With Resister	390	1.19		With Resister	2000	2.74
With Resister	470	1.35		With Resister	2200	2.82
With Resister	510	1.43		With Resister	2700	2.98
With Resister	560	1.51		With Resister	3300	3.13
With Resister	680	1.70		With Resister	3900	3.24
With Resister	820	1.89		With Resister	4700	3.35
With Resister	1000	2.08		With Resister	5100	3.39
With Resister	1200	2.26		With Resister	5600	3.44
With Resister	1500	2.48		With Resister	6800	3.52
				With Resister	open	4.00