Hi and first thanks for your help :)

I have 4 drivers like this too, the enable pins aren't necessary?

In my last setup with arduino i used this connection:

Click image for larger version.  Name: grbl-breakout-5045t.jpg  Views: 1029  Size: 236.9 KB  ID: 29241

And worked fine.

With CSMIO and this drivers what recommendation are the better, doesn't use enable pins or this one i take from csmio web:
Click image for larger version.  Name: tb6600-vs-csmioip-m.jpg  Views: 1013  Size: 77.4 KB  ID: 29242

Thanks for your time :)