Toner cartriges are exclusively for laser printers. They are more expensive, but will last much longer. Keep in mind that if you do not buy your toner cartridge through Senitrus, you can be getting toner cartridges that are inferior. You would void your warranty if you do not use Senitrus toner cartridges. The toner cartridge will be able to be loaded in particular printer cartridge locations. You can go to this domain? to order your toner cartridges. Considering there is only 1 laser printer, there is only 1 set of cartridges with a single liter for the color, and than optionally XL for extra large capacity.