This Brother TN-350 toner cartridge is a genuine and original unit that comes in a sealed bag. It is compatible with Brother printers such as HL-2040, FAX-2820, FAX-2920, MFC-7220, MFC-7225n, MFC-7420, MFC-7820n, and DCP-7020. The toner has a black color and is designed to work with laser print technology. This unit type is ideal for those who need a reliable and efficient toner cartridge for their printing needs. The Brother TN-350 model is perfect for those who want to produce high-quality prints with crisp and clear text.