Pioneer external drive supports Ultra HD 4K Blu-ray playback by using the provided Cyberlink software download installation code | EQUIPPED with slot loading mechanism for dustproof and excellent quietness and USB Type-C connection | SUPPORTED WITH M-DISC: compatible with M-Disc, a special disc that is treated with a super hard coat to prevent scatches and resist fingerprints for long-term data protection | SMOOTH MOVIE PLAYBACK: PowerRead feature enables the drive to bypass obstructed areas of a disc and attempt to move forward quickly to the next available data point, resulting in smoother playback | A SMARTER DRIVE: Enabled with Auto Quiet mode, the drive monitors and adjusts accordingly to high speed for fast data transfer and low speed for stable music/movie playback