I/OMagic Blu-ray Reader/DVD-Writer - BD-ROM/DVD±R/±RW Support - 24x CD Read/24x CD Write/24x CD Rewrite - 6x BD Read - 8x DVD Read/8x DVD Write/8x DVD Rewrite - Double-layer Media Supported - USB 2.0

Blu-ray Reader/DVD-Writer offers backup facility for your important data and playbacks a full range of Blu-ray, DVD and CD formats Double-layer media supported; means that you will burn 2 different layers on the disc thus greatly increasing (literally doubling) the storage capability