When print quality is of paramount importance, we always recommend using original Canon toner cartridges, like the 3024C002 in your printer.Offering less than half the estimated page yield of the 054H also available, the genuine Canon 054 black is available for a much lower price. As a black laser toner cartridge, the Canon 3024C002 still however offers around 1,500 prints, according to the manufacturer.You can use this standard capacity Canon 054 black toner cartridge in the i-SENSYS LBP-621Cw and any other four-colour laser printer mentioned on this page.