The first 3 pins set the steps the same as the A4988 except 3 pins set the DVR8825 at 32 microsteps where the A4988 is 16 steps.
The 4th pin for the DVR8825 goes to the sleep and reset pins and is not needed on the new drivers. Unless you got these drivers a long time ago the should be the new ones.
If you want go to [www.pololu.com] and look at the pictures of the 2 different drives. It looks like there is a change in the 3 chips below the large driver chip.
I would just use the 3 jumpers same as the A4988 and see if it works prior to putting on the 4th jumper.
The 4th pin for the DVR8825 goes to the sleep and reset pins and is not needed on the new drivers. Unless you got these drivers a long time ago the should be the new ones.
If you want go to [www.pololu.com] and look at the pictures of the 2 different drives. It looks like there is a change in the 3 chips below the large driver chip.
I would just use the 3 jumpers same as the A4988 and see if it works prior to putting on the 4th jumper.