The Canon ImageClass MF4550 is a versatile all-in-one printer that allows users to print, fax, scan, and copy using the same machine. It prints at speeds of up to 25 pages per minute and offers a monthly yield of up to 10,000 pages. This printer uses the Canon 128 toner cartridge. If you want to get up to 75% savings on replacement Canon toner cartridge, then get it only here at Inkjets. We offer the Canon 128 Compatible Black Toner Cartridge Twin Pack. Our compatible Canon 128 has a shelf life of 24 to 36 months, so if you're only going to use one, you can always keep the other as spare for future use. Contact us if you have inquiries about our products and other offers.