Sony BWU-100A Blu-ray Writer, Internal

Sony BWU-100A Blu-ray Writer, Internal, 32x CD Read/24x CD Write/16x CD Rewrite, 2x BD Read/2x BD Write/2x BD Rewrite, 8x DVD Read/8x DVD Write/8x DVD Rewrite, Double-layer Media Supported, IDE Ultra ATA/66 (ATA-5), 5.25", 1/2H

Sony BWU-100A Blu-ray Writer, Internal Blu-ray writer offers ideal copying and playback performance of Blu-ray discs, DVDs, and CDs Double-layer media supported; means that you'll burn 2 different layers on the disc thus greatly increasing (literally doubling) the storage capability