Package Contents: 1 Pack DR-431CL Color Drum Unit. Compatible Printer Models: HL-L8260CDW HL-L8360CDW HL-L8360CDWT HL-L9310CDW HL-L9310CDWT HL-L9310CDWTT DCP-L8410CDW MFC-L8610CDW MFC-L8690CDW MFC-L8900CDW MFC-L9570CDWT MFC-L9570CDW Simple installation method: Step-1:Shake for 5 seconds to loosen drum unit powder distribution. Step-2:Remove the seal tape from side of the drum unit. Step-3:Remove orange rings from side of the drum unit. Step-4:Insert the drum unit into your printer. The latest upgraded chip: Adapt to the latest upgraded chips that can be quickly identified, ensure higher compatibility and provide a lasting printing experience with excellent performance! Printing Performance: Our DR-431CL drum units are made of high-quality carbon powder nano-level manufacturing process, with firm fixing, high blackness, non-toxic and harmless, bringing users a good experience. Aftersales and Warranty: If any of our items are defective, guaranteed money back; reach us via: 1. “Order List” -> Click “Contact Seller”. 2. Click the store name link under “Add to Cart”-> Click “Ask a question”.