This latest software release is compatible with ALL HitecDCFocus units. It includes an ASCOM compliant driver for both HitecDCFocus and HitecDCFocus2 units. Be sure to select the correct unit before connecting. If you own both units, open two instances of the software and connect to each separately. There is now no need for separate software installs for a second DC focus unit. Full software documentation is currently being prepared, for the moment the software operation is very similar to the older software and users of that software will be familiar with it. If not refer to the older documentation until the new documentation is ready.