Asus DRW-24F1ST DVD-Writer - DVD-RAM/±R/±RW Support - 48x CD Read/48x CD Write/24x CD Rewrite - 16x DVD Read/24x DVD Write/8x DVD Rewrite - Double-layer Media Supported - SATA - 5.25in - 1/2H

Copy your most favorite movies and music to the disc with this DVD-Writer Double-layer media supported; means that you will burn 2 different layers on the disc thus greatly increasing (literally doubling) the storage capability