SKU:

CS-Lexmark-MS321DN-MX521ADE-4BK

Printer Brand:

Lexmark

OEM Number:

56F1000

Ink Color:

Black

Page Yield:

Black: 6000

Printer Type:

Laser Cartridge

Condition:

New Compatible

Frequently Asked Questions

Why do fleet managers standardize on a single cartridge number?

Because every additional cartridge type is another chance to order the wrong box, stock the wrong shelf, or strand supply when a machine is retired. A fleet built on this platform runs on the 56F1000 alone, so one four-pack order can be received once, logged once, and issued wherever the need appears. Standardization is an inventory policy, not just a purchase.

What are the fleet-level economics of this four-pack?

The pack is $644.30 — $161.08 per cartridge, and $55.46 less than four singles at $699.76. Spread over its 24,000 rated pages, that is about 2.7 cents a page, the lowest per-unit figure on this cartridge. For a fleet budget, one larger order also means fewer purchase orders and deliveries to process per page printed.

Which machines across the fleet can draw from this stock?

All of the platform models: MS321DN, MS421DN, MS421DW, MS521DN, MS621DN, MX321ADN, MX521ADE and MX521DE. The listing is headed by the MX521ade, but central stores never has to match a box to one specific configuration — any cartridge from this pack fits any listed machine. A spare sent to the wrong site is not a crisis; it simply serves whichever machine there needs it.

How should central stores distribute the four cartridges?

Hold the pack centrally and issue single cartridges as sites report low toner, or pre-position one spare at each high-volume site and keep the balance in the stockroom. Because the cartridge is common to the fleet, distribution can follow actual consumption instead of forecasts per model. The last cartridge leaving the shelf is the signal to place the next order.

Will cartridges sit safely in a stockroom for a year or more?

Yes, with ordinary care: sealed in their boxes, stored flat, in a dry room at normal office temperature, away from direct sun and heating vents. Toner powder is stable over long periods under those conditions. Date-marking arrivals and issuing oldest stock first keeps the rotation honest across a multi-site fleet.

How is a fleet purchase like this protected?

Unit by unit. Each cartridge has its own one-year warranty, and returns are free during the first year, so a single underperforming cartridge is exchanged on its own merits — through the steps on our shipping and returns page — without disturbing the rest of the fleet's stock. Support is available Monday through Friday, 9 AM to 5 PM CST for any site.

About This Lexmark 56F1000 Four-Pack for the MX521ade

Four compatible Lexmark 56F1000 black toner cartridges — 24,000 rated pages — packed for fleets and central stores running the MX521ade and its platform siblings on one shared cartridge number. It is the cheapest way to buy this cartridge per unit, with a one-year warranty and one-year free returns on every cartridge from Clever Supplies. See the rest of the range on our Lexmark toner page.