Good quality, works flawlessly. 2 Attention: 1. when it replaces another in a portable device such as the facet plastic side closing the disc may not add to 100% with the facet in existing plastic, which can hurt a bit the design of the laptop. 2. Attention: to be able to watch bluray on the PC you need a suitable software (I tested and recommend powerDVD) often pays to be able to decrypt them. VLC does not work anymore due to the new generation of DRM.