561H
Compatible Lexmark 561H Black High Yield Toner Cartridge (56F1H00)
15,000 pages
$189.99
Lexmark MS421dn toner
Your MS421dn takes the 561H (high yield). At our price that is about 1.3¢ a page.
The Lexmark MS421dn is a mono laser printer in the MS421 series, which shares cartridges across 2 models.
The cartridge it takes is the 561H, rated by Lexmark at about 15,000 pages, which works out to roughly 1.3¢ a page at our price of $189.99.
When you compare prices, compare cost per page rather than the sticker price: a cheaper cartridge with half the rated yield costs more to run. Every cartridge here ships free, is covered by our printer damage protection and can be returned within 90 days, opened or not.
Cartridges that fit
What it costs you a month
About $9.66 a month in toner, roughly one 561H every 3 months.
Questions about the MS421dn
What toner does the Lexmark MS421dn use?
The 561H. Lexmark lists this cartridge as compatible with this model, and the yields on this page are Lexmark's published figures.
Does using a compatible cartridge void the MS421dn warranty?
No. Under the Magnuson-Moss Warranty Act a manufacturer cannot void your warranty because you used a third-party cartridge. If one of ours damages the printer, our printer damage protection covers the repair.
Other Lexmark MS421 models
Most of these share the same cartridges. Check the model page to be sure.
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Page updated Sep 22, 2026. Compatibility checked by Dan Whitaker, Print Technician. Brand names and part numbers are used only to identify compatibility. We are not affiliated with or endorsed by any printer manufacturer.