When print quality is of paramount importance, we always recommend using original Canon toner cartridges, like the 3021C002 in your printer.Offering less than half the estimated page yield of the 054H also available, the genuine Canon 054 yellow is available for a much lower price. As a yellow laser toner cartridge, the Canon 3021C002 still however offers around 1,200 prints, according to the manufacturer.You can use this standard capacity Canon 054 yellow toner cartridge in the i-SENSYS MF-643Cdw and any other four-colour laser printer mentioned on this page.