This video covers how you need to educate yourself on your motion controller purchase. The two questions in this video I get asked virtually everyday, and want to make it clear of what your really getting when buying proprietary systems. I always recommend doing your research prior to making any purchase. This is especially true with CNC hardware for your system. If you have questions you can contact me through my eBay store herehttp://stores.ebay.com/eDealers-Direct?_trksid=p2047675.l2563 Thank you Vince