you have to attach them to a te as that does all the syncing as it scans the ivn that you set for the te and contatiner to use and then it does syncing (no idea how it does this, probaly does a time based sync) if you need any help with getting it to use a te just ask, i might make a tutorial latter on how to make a machine like a furnace but with as many slots as you want, and does what ever you want.