Sharp FO-50DR Drum Unit at a glance: a drum unit rated at about 20,000 pages. Compatible: newly manufactured to Sharp's specifications. Fits the Sharp FO-4400, FO-4450, FO-4470 and FO-DC500/DC525/DC600. Toner (FO-50ND) is sold separately. 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 Condition Compatible (newly manufactured to the original's specifications) Replaces OEM part FO-50DR (Sharp drum unit) Page yield About 20,000 pages (manufacturer rating for the original) Guarantee 1-year 100% satisfaction guarantee: replacement or refund Shipping Same business day when ordered by 4 PM ET (Mon–Fri); free shipping on orders over $50 What's in the Box 1 × Sharp FO-50DR compatible drum unit — about 20,000 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 (6 models) Sharp FO-4400 / FO-4450 / FO-4470 Sharp FO-DC500 / FO-DC525 / FO-DC600 Don't mix these up: FO-50DR is the drum for fax machines that take FO-50ND toner. It lasts through several toner cartridges. Not sure? Look up your exact model on our Find Ink by Printer page, or contact us and we'll confirm the right drum for you. Part Numbers & Also Known AsThis drum unit replaces or is also searched for as: FO-50DR, FO50DR, Sharp FO-50DR, FO-50DR drum, Sharp FO-4400 drum Chips, Printer Messages & Installation Installing: open the front cover, lift out the toner cartridge, then remove the old drum. Unpack the new drum, remove its protective sheet without touching the drum surface, set it in place, reinstall the toner and close the cover. Drum messages: if the fax still reports the drum near end of life, reset the drum counter from the machine's menu. Keep the drum out of bright light. Drum vs. toner: this is the drum only. It lasts through several FO-50ND toner cartridges. Still stuck? See our guide to fixing a cartridge that isn't recognized or contact us and we'll make it right. Compatible vs. Original Drum UnitsOriginal (OEM) drums are new from the printer brand and cost the most. Compatible drums, like this one, are newly manufactured by a third party to the original's size and page-life specifications, so they drop into the same slot at a much lower price. Castle Ink sells compatible (newly manufactured) toner and drums and remanufactured inkjet cartridges. Other Options for the Same Printers Sharp FO-50ND Black Toner Cartridge for FO-4400 / FO-4450 / FO-DC500 Fax Frequently Asked Questions How long does the FO-50DR last?About 20,000 pages. It usually lasts through several toner cartridges. Is toner included?No. This is the drum only; it works with FO-50ND toner. 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?Keep the drum sealed in its light-proof bag at room temperature, away from direct sunlight, until you install it. 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.