Sharp FO-50ND Black Toner Cartridge for FO-4400 / FO-4450 / FO-DC500 Fax – Compatible

Sharp FO-50ND Black at a glance: a black toner cartridge rated at about 6,000 pages. Compatible: newly manufactured to Sharp's specifications. Fits the Sharp FO-4400–FO-4470 and FO-DC500–FO-DC635 fax machines. The drum (FO-50DR) is a separate part. Backed by a 1-year 100% satisfaction guarantee; orders by 4 PM ET (Mon–Fri) ship the same day from Long Island, NY.

Key Facts

What's in the Box

• 1 × Sharp FO-50ND Black compatible toner cartridge — about 6,000 pages

Page yields are the manufacturer's rating for the matching original cartridge, measured at roughly 5% page coverage under ISO/IEC 19752 or 19798 testing. Your results will vary with what you print.

Compatible Printers (8 models)

• Sharp FO-4400 / FO-4450 / FO-4470
• Sharp FO-DC500 / FO-DC525 / FO-DC535
• Sharp FO-DC600 / FO-DC635

Don't mix these up: FO-50ND is the toner; these machines also use the separate FO-50DR drum (about 20,000 pages). It is not the same as FO-47ND or FO-45ND.

Not sure? Look up your exact model on our Find Ink by Printer page, or contact us and we'll confirm the right toner for you.

Part Numbers & Also Known As

This toner cartridge replaces or is also searched for as: FO-50ND, Sharp FO-50ND, Sharp FO-50ND black, SharpFO-50ND black, FO-50ND black toner, FO50ND, Sharp FO-4400 toner, Sharp FO-DC600 toner

Chips, Printer Messages & Installation

Installing: open the front cover, lift the empty toner cartridge out of the drum unit, shake the new cartridge side to side a few times, remove its seal and set it into place. Close the cover.

Supply messages: if the fax still shows a toner warning, open and close the cover once or follow the on-screen prompt to confirm a new cartridge.

Streaks or faint print: the drum (FO-50DR) is a separate part with its own life. If streaks continue with fresh toner, the drum may be due.

Still stuck? See our guide to fixing a cartridge that isn't recognized or contact us and we'll make it right.

Compatible vs. Remanufactured vs. Original

Original (OEM) toner is new from the printer brand and costs the most. Compatible toner, like this cartridge, is newly manufactured by a third party to the original's size and page-yield specifications, so it drops into the same slot at a much lower price. Remanufactured toner is an emptied original cartridge that has been rebuilt and refilled. Castle Ink sells compatible (newly manufactured) toner and remanufactured inkjet cartridges.

Other Options for the Same Printers

• Sharp FO-50DR Drum Unit for FO-4400 / FO-4450 / FO-4470 Fax

Frequently Asked Questions

How many pages does the Sharp FO-50ND black print?

About 6,000 pages, based on Sharp's rating for the original FO-50ND at roughly 5% coverage.

Will this void my printer warranty?

No. Under the U.S. Magnuson-Moss Warranty Act, a manufacturer can't void your printer warranty just because you used a third-party or remanufactured supply. If a non-original supply directly caused damage, that specific repair might not be covered.

How long can I store it?

Sealed toner keeps for about two years at room temperature. Keep it in its bag, away from heat and direct sunlight, and store it flat.

When will my order ship?

Orders placed by 4 PM ET, Monday through Friday, ship the same business day from Long Island, NY, by USPS (2–5 business days). Expedited 1–2 day delivery is available at checkout, and shipping is free on orders over $50.