Read and write blu-ray discs at 10x with the WH10LS30 Blu-ray rewriter that allows you record Up to 50GB of files, photos, or business documents onto a single dual layer BD-R blu-ray disc. Play HD content from BD Video discs or record up to nine hours of high definition video. SATA interface technology allows foreasier integration and ultimately faster performance whileLightScribe gives you the added feature of etching customized labels onto a special coated LightScribe disc (sold separately).