Choose a genuine Samsung Black Toner Cartridge (SCX-4720D3/ELS) for consistently great documents and illustrations from your Samsung SCX-series laser printer. Your Samsung printer will display a Toner Low warning when the current cartridge is running low. Order a replacement as soon as possible and install it when you see the Toner Empty message. This standard yield toner cartridge is packed with enough black toner to print 3000 pages.