Install a genuine Samsung Black Toner Cartridge (SCX-4216D3/ELS) in your Samsung laser printer or fax machine for high quality prints you can depend upon. Your Samsung machine will display a Toner Low error message when the toner cartridge is almost empty. Make sure you order a replacement as soon as possible and replace it when you see the Toner Empty message on the display. This standard yield toner cartridge is packed with enough toner to print 3,000 pages.