LG WP50NB40 Blu-ray Writer - External - Black - BD-R/RE Support - 24x CD Read/24x CD Write/16x CD Rewrite - 6x BD Read/6x BD Write/2x BD Rewrite - 8x DVD Read/8x DVD Write/8x DVD Rewrite - Double-layer Media Supported - USB 2.0

Double-layer media supported; means that you will burn 2 different layers on the disc thus greatly increasing (literally doubling) the storage capability Simply plug this blu-ray writer drive and you will begin to enjoy watching movies, writing requisite forms of multimedia content to the discs, and much more