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Rectangular black Lexmark toner cartridge with green handle, model 56F1U00

Lexmark

Lexmark 56F1U00 Black Ultra High Yield Toner Cartridge 25000 Pages

SKU CH-9HXQ-NWN3Y MPN 56F1U00

Genuine black toner cartridge yielding up to 25000 pages for Lexmark MS and MX series printers

  • Cartridges included1
  • Ink or toner colorBlack
  • Estimated page yield25000 Pages
  • For use withLexmark MX521de, Lexmark MS521dn, Lexmark MX521ade, Lexmark
  • Key featuresUnison
  • Print up to 25000 pages before replacing the cartridge
  • Works with Lexmark MS521dn, MS621dn, MS622de and MX521de models
  • Unison toner delivers consistently outstanding image quality
  • Genuine Lexmark cartridge ensures long-life system reliability
  • Return programme design helps reduce waste through recycling

Genuine Black Toner for Lexmark MX and MS Printers

This genuine Lexmark 56F1U00 cartridge delivers black Ultra High Yield output for compatible Lexmark MX and MS series printers. It is designed for offices that need consistent monochrome printing at high volume. The Unison formulation supports long-life system reliability across the listed models. One cartridge is supplied in the pack.

Thermal Performance and Power Use

As a toner cartridge, this unit has no active cooling, fans or power draw of its own. It operates passively inside the printer's existing fuser and development system. Noise and thermals are determined entirely by the host printer during normal printing cycles. The cartridge adds no additional acoustic or thermal load beyond standard consumable operation.

Deciding Specification: 25000 Page Yield

The approximate yield of 25000 pages is the single figure that determines whether this cartridge matches your print volume. Buyers who need a lower page count or colour output should select a different cartridge. This item is only compatible with the specific Lexmark MX and MS models listed in the specifications.

How it compares

Measured against everything we stock in OEM Laser Toner, at today’s prices. Recalculated every night.

Price $311.99
Pricier than about 89% of the 3,670 comparable items (median $112.99).

Specifications

Product
Brand nameLEXMARK
Model name56F1U00
Part number56F1U00
Ink or toner colorBlack
Performance
Estimated page yield25000 Pages
Size & build
Shipping weight1.81 kg
Package size421 × 332 × 198 mm
Compatibility
For use withLexmark MX521de, Lexmark MS521dn, Lexmark MX521ade, Lexmark MX622ade, Lexmark MS621dn, Lexmark MX522adhe, Lexmark MS622de, Lexmark MX622adhe
In the box
Cartridges included1

Questions about this item

How do I install the Lexmark 56F1U00 cartridge in an MX521de and what step is often missed?

Open the front door, remove the old cartridge, shake the new 56F1U00 gently side-to-side to distribute toner, remove the sealing tape completely, then slide it in until it clicks.

What replacement or maintenance will the 56F1U00 need after its 25000 page yield?

Replace the cartridge when print quality fades or the printer signals low toner; the Unison toner formulation is designed to last the full rated yield without intermediate maintenance.

What limit appears first during sustained high-volume printing with the 56F1U00?

The 25000 page yield is the primary limit; once reached, toner is depleted and the cartridge must be replaced to continue printing.

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