This is a genuine product, but the individual packaging box was damaged and has been discarded, so only the contents are being sold. It is an unused item (inner bag only) that has only had the outer box opened. Since it is old, it is unopened, but the operation has not been confirmed as there is no actual machine to test it on. Please consider it as junk. When shipping, the product will be packed in a separate cardboard box. Thank you for your understanding and purchase. The following is quoted from the Brother website: ↓↓↓ Toner Cartridge TN-28J This is a toner cartridge TN-28J for monochrome laser printers and multifunction devices. Number of printed pages: Approximately 2,600 pages (A4 JIS X6931 published value*) ■ Please be careful when replacing the toner! This compatible model uses a toner and drum separate cartridge. When replacing only the toner cartridge, please be careful not to discard the drum unit. *What is the JIS X 6931 published value? The number of printable pages meets the published value based on the JIS X 6931 (ISO/IEC 19752) standard (which defines the test method for measuring the number of printed pages of toner cartridges for monochrome electrophotographic printers). Compatible models DCP-L2540DW DCP-L2520D FAX-L2700DN HL-L2365DW HL-L2360DN HL-L2320D MFC-L2740DW MFC-L2720DN