The Aleratec 1:7 Blu-ray/DVD/CD Tower Publisher SLS is a standalone LightScribe disc publishing system that simultaneously produces up to 7 Blu-ray/DVD/CD copies or 7 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. Disc Labels: DVD/CD LightScribe with LightScribe Media. Writable Discs: BD-R SL/DL, BD-RE SL/DL, DVD±R/RW,DVD±R DL, DVD-RAM, CD-R/RW. Drive Max Write Speed:BD-R SL - 12x, BD-R DL - 8x,BD-RE SL/DL - 2x, DVD±R - 16x, DVD±R DL - 8x, DVD-RAM - 12x, DVD+RW - 8x, DVD-RW - 6x, CD-R - 48x, CD-RW - 24x. Drive Max Read Speed: DVD-ROM - 16x, CD-ROM - 48x. Removable Hard Disk Drive: 1 TB. Power Requirements: 115-230 VAC Switchable. Dimensions (LxWxH): 431.8 x 177.8 x 431.8 mm17 x 7 x 17 in. Weight: 15.6 kg / 34.4 lb Warranty: Limited 1 year parts and labor.