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Four rectangular black toner cartridges in white packaging

SpeedyInks

SpeedyInks 521H Black Toner Cartridge 4-Pack 25000 Pages

SKU CH-155C-20Q4Y

A four-pack of compatible black toner cartridges replaces Lexmark 521H and yields 25000 pages per cartridge at 5% coverage

  • Cartridge Quantity1
  • Cartridge ColorBlack
  • Replacement BrandLexmark
  • Ink TypeDye-based
  • Approximate Page Yield25000 Pages
  • High-yield printing with 25000 pages per cartridge
  • Four cartridges deliver 100000 total pages for bulk value
  • Compatible with Lexmark MS810, MS811 and MS812 series
  • Meets ISO-19752 yield standards for consistent output
  • Installs easily without affecting printer warranty

4-Pack Black Toner for Lexmark MS Series

This four-pack of SpeedyInks compatible black toner cartridges replaces the Lexmark 521H high-yield cartridge. Each unit delivers an estimated 25,000 pages at 5 percent coverage for a combined 100,000 pages. The cartridges are built for the MS810de, MS810dn, MS810dtn, MS810n, MS811n, MS811dn, MS812dn, MS812dtn, MS812de and MS811dtn printers. Offices with high-volume mono printing needs gain a lower cost per page and a ready spare supply.

Upgrade from Standard Yield 521 Cartridges

The 521H high-yield design suits users who currently run through standard Lexmark 521 cartridges too quickly. Moving to this 4-pack becomes worthwhile when monthly print volumes make frequent single-cartridge swaps disruptive. Buyers who only print occasional documents or colour pages will not recover the upfront investment. The dye-based formulation matches OEM black density and sharpness for professional text output.

Region-Locked to US and Canada Printers

These compatibles function solely on Lexmark hardware purchased within the United States and Canada. Printers sourced from other regions will not recognise the chips. Page-yield claims follow ISO-19752 test methodology at 5 percent coverage; actual yield varies with page content and print settings. No other printer models or regions are supported by this cartridge version.

Highlights

  • High-yield printing with 25000 pages per cartridge
  • Four cartridges deliver 100000 total pages for bulk value
  • Compatible with Lexmark MS810, MS811 and MS812 series
  • Meets ISO-19752 yield standards for consistent output
  • Installs easily without affecting printer warranty

Specifications

BrandSPEEDYINKS
Cartridge Quantity1
Cartridge ColorBlack
Replacement BrandLexmark
Ink TypeDye-based
Approximate Page Yield25000 Pages

Questions about this item

Will the 521H cartridge fit inside my Lexmark MS812dn without a different tray?

The 521H high-yield cartridge matches the original Lexmark 521H form factor, so it seats in the standard toner bay of the MS812dn and all other listed MS810, MS811 and MS812 models.

What is the step people forget when installing the 521H toner?

Remove the orange protective cover and pull the sealing tape straight out before sliding the cartridge in; skipping this leaves the toner sealed and the printer will report a supply error.

When will I need to replace the 521H black cartridge?

Each cartridge yields about 25000 pages at 5 % coverage per ISO-19752, so plan a replacement after roughly that many prints; the 4-pack provides 100000 pages total.

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