The Sealed Brother TN 540 Black Laser Toner Cartridge is a genuine/original product designed specifically for Brother printers. With a print technology of laser, this black toner cartridge is compatible with various Brother models such as DCP-8045D, HL-5150DLT, MFC-8640D, and more. Its compact size, with an item height of 5.10 inches, makes it easy to handle and install, providing high-quality black prints for your documents and images. Upgrade your printing experience with this reliable Brother TN 540 toner cartridge.