No matter what you want to backup - important or personal data from a digital still camera, digital video camcorder, TV and so on - the Lite-on DH-4B1S is a good choice for recording large volumes of DVD and high-definition audio and video. Its fast Blu-ray disc/DVD writing and rewriting functionality should also meet the needs of the most demanding Blu-ray DVD title creating and multimedia applications on PCs, and support for all the popular legacy formats makes it a practical choice. The only disappointment is lack of Dual-Layer (DL) Blu-ray support, allowing you to burn up to 50GB of data.