It would have been useful to know the compatibilities of this Blu-ray burner drive, but it was disappointing that, although recognized by the main PC and the laptop, which showed the properties and betrayed no fault operation, it was impossible to read a disc with either. The explanation could not be more vague and resolved to a single finding. Too bad, because the product seemed to be made with care and was not unpleasant to handle. Panasonic is a usually reliable brand and other devices are still in perfect working despite their respectable age. It is hoped that the failure is simple.