The LGSuper Multi slim Blu-ray rewriter BT20N for your notebook features a 6x BD-R write speed with a large buffer memory to prevent underrun error. Record a large capacity of files, photos, or business documents onto a quad layer BDXL disc. Serial ATA interface allows for faster performance while M-DISC provides superior reliability in data storage that is perfect for archiving important data. Key Selling Points Write & play Blu-ray discs including BDXL Quad layer M-DISC support Serial ATA interface Read & write compatible, CD family, DVD-ROM, BD-ROM/R (SL/DL)/RE (SL/DL) read compatible Large buffer memory Underrun prevention Supports BD-R LTH (low to high disc) Silent play function Ro HS compliant