This is a brand new Kyocera TK-322 Black Toner designed for use with the FS-3900DN Laser Printer. It is a genuine/original product and is compatible with Kyocera printers. The toner cartridge uses laser print technology and produces high quality black prints. The model number for this toner cartridge is Kyocera TK-322 and it is suitable for use with FS-3900DN printers.