SKU:

CS-Lexmark-MS321DN-MS621DN-BK

Printer Brand:

Lexmark

OEM Number:

56F1000

Ink Color:

Black

Page Yield:

Black: 6000

Printer Type:

Laser Cartridge

Condition:

New Compatible

Frequently Asked Questions

The MS621dn is the fast model in its family — does it burn through this cartridge faster?

Per page, no: toner use is set by what is on the sheet, not by engine speed. What the speed changes is how much a workgroup actually prints — a faster machine attracts more jobs, so the same 6,000 rated pages may cover two or three busy months instead of the longer stretch you would see on a quieter desk printer. Plan your reorders by page count, not by the calendar you used for a slower model.

How many pages should our workgroup realistically expect?

The rating is 6,000 pages at the standard 5% coverage of a typical text page. A workgroup printing contracts, invoices, and reports all day will land near that figure; heavy letterheads, dense tables, and full-page graphics pull it down. At roughly 2,500 pages a month, expect to change this cartridge about five times a year.

Which printers take this cartridge?

This listing is titled for the Lexmark MS621dn, and the cartridge fits it — it is also the standard 56F1000 for the rest of the platform: MS321DN, MS421DN, MS421DW, MS521DN, MS621DN, MX321ADN, MX521ADE and MX521DE. If your office runs a mix of those models, this one cartridge number covers all of them, which keeps stocking simple.

Can I tell how much toner is left without opening the printer?

Yes. The MS621dn reports its toner level on the front display and through its built-in web page, so whoever looks after the printer can check the gauge during the week instead of discovering an empty cartridge mid-job. Order when the low-toner warning appears and the replacement will arrive before print quality suffers.

Who do I contact if a new cartridge prints poorly?

Start with us: support is available Monday through Friday, 9 AM to 5 PM CST, and most quality complaints are resolved with a quick reseat-and-clean routine we can walk you through. If the cartridge itself is at fault, it is protected by a one-year warranty, with the return steps set out on our shipping and returns page.

What if I ordered this for the wrong printer?

Returns are free for a full year, so an unopened cartridge ordered in error can go back without penalty. Check the compatibility list on this page against your model name before opening the box, and if anything is unclear, ask us first — we would rather confirm the fit than process a return.

About This Lexmark 56F1000 Cartridge for the MS621dn

This compatible Lexmark 56F1000 black toner cartridge is rated at 6,000 pages and costs $174.94 — the standard-yield supply for the fast MS621dn workgroup printer. One cartridge number also covers the rest of the platform, which simplifies stock for mixed offices. It is sold with a one-year warranty and one-year free returns by Clever Supplies; the full selection is on our Lexmark toner page.