LDProducts.coms compatible Brother DR520 DR-520 laser drum unit is guaranteed to perform with your Brother laser printer. It replaces your original Brother DR520 laser drum unit. Our compatible replacement DR520 laser drum units and supplies also known as generic are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM Original Equipment Manufacturer standards for the DR-520 and offer high-quality printing results. Containing new OPC drums and other internal parts, they are an economical alternative to expensive OEM DR520 Brother laser drum units and supplies, and offer big savings over brand-name DR-520 laser drum unit and supplies. The use of compatible replacement laser drum units and supplies does not void your printer warranty. Your TN580 is the replacement laser toner cartridge that fits into your DR520 drum housing. You can replace the Brother TN580 without replacing the entire DR520 drum housing.We offer a Two Year 100% Quality Satisfaction Guarantee on our compatible DR520 laser cartridges and supplies. For use in the following printers HL Printers HL-5250DN, MFC MultiFunction Printers MFC-8460N, HL Printers HL-5240, MFC MultiFunction Printers MFC-8670DN, MFC MultiFunction Printers MFC-8660DN, MFC MultiFunction Printers MFC-8860DN, DCP Series DCP-8060, HL Printers HL-5250, MFC MultiFunction Printers MFC-8870WN, MFC MultiFunction Printers MFC-8860N, DCP Series DCP-8065DN, DCP Series DCP-8065, HL Printers HL-5280DW, HL Printers HL-5250DNT, HL Printers HL-5280.