The nice thing I like about using this program, is that if things get messed up in one way or another from "testing", just like your computer you can restore back to the last saved file. Reverse version of what Iceberg said. Let's you experiment without any worries. Have fun with it! It gives you a good insight of how things work. You will want to add a few Sats. that are not in the original config. of the 5000. CM can do this manually within the program and so much more. Have fun with your new machine. There are many different ones out there, and some better I'm sure, but I tell you, for what this little box has and what it does, I'm not giving mine up until it says goodbye to ME! Save your files to CM whenever you find you have made "headway" on any given day. As far as if it works USB, others will have to answer that for you. Have fun and let us know how your doing with it!