The Aleratec 1:15 Blu-ray/DVD/CD Tower Publisher SLS is a standalone LightScribe disc publishing system that simultaneously produces up to 15 Blu-ray/DVD/CD copies or 15 clearly labeled DVD/CD discs with no computer required. Its USB 2.0 connection allows you to drag and drop files from your PC directly to its internal hard drive. For on-the-fly jobs, a separate Blu-ray multidrive reader lets you bypass the hard drive and do convenient disc-to-disc copies.Unlike many other duplicators, this unit supports duplication from a variety of source formats, including simply copying your contents onto the internal HDD without creating an image file.