The Samsung SCX 4321 was designed to perform in the most demanding printing environments. This black and white printer has the ability to print, scan, copy, and fax at impressive speeds to help keep productivity at maximum levels. And when combined with our Compatible Samsung toner cartridges, the Samsung scx4321 will create stunning printouts with bold text and crisp line detail. We carry the Compatible Samsung SCX-4521D3 laser toner cartridges which have been tested to ensure excellent printing results. Each Samsung Toner Cartridge has up to a 2 year shelf life for definitive performance and convenience. We guarantee outstanding print quality from our Compatible Samsung toner cartridges or we will refund your money within 90 days of purchase.