The BDR-XD7TB is one of the world's smallest and lightest BD/DVD/CD portable burners supporting BDXL and M-DISC. The ultra compact 133x133x14.8mm USB 3.0 drive can read and write to all BDXL discs including BD-R triple layer 100GB media, BD-R quad-layer 126GB media, and the BD-RE triple layer 100GB media , as well as conventional Blu-ray discs (single-layer 25GB media and dual layer 50GB media). The portable device, weighs only 230 grams and has the ability to be powered directly via USB (no ac adaptor required).