Dell 3K9XM Black Toner Cartridge (331-0778) – High-Yield Compatible

Dell 3K9XM Black (331-0778) at a glance: a black high-yield toner cartridge rated at about 2,000 pages. Compatible: newly manufactured to the original's size and specifications. Fits the 1250c, 1350cnw, 1355cn and other models listed below. Backed by our 1-year 100% satisfaction guarantee; orders placed by 4 PM ET (Mon–Fri) ship the same day from Georgia.

Key Facts

What's in the Box

• 1 × Dell 3K9XM Black (331-0778) compatible toner cartridge — about 2,000 pages

Page yield is 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 (7 models)

• Dell 1250c
• Dell 1350cnw
• Dell 1355cn
• Dell 1355cnw
• Dell C1760nw
• Dell C1765nf
• Dell C1765nfw

Don't mix these up: Not the 1,400-page color cartridges 331-0777/0779/0780 of the same family; not the 2150/2155 toner (331-0719); not 331-0725 (standard-yield family).

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: 331-0778, 3K9XM, 810WH, 332-0407, DC9NW, DV16F

Installation & Troubleshooting

Installing: open the printer's front or top cover and pull the empty cartridge out by its handle. Gently rock the new cartridge side to side five or six times to spread the toner, pull the sealing tape straight out if there is one, slide it in until it seats and close the cover.

Supply messages: if the printer shows a "non-genuine" or "used supply" notice, press OK or Continue to keep printing. If the cartridge isn't recognized, check that all packing material is off and reseat it firmly.

Streaks or faint print: rock the cartridge again to redistribute the toner and print a cleaning page from the printer menu.

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) supplies are new from the printer brand and cost the most. Compatible supplies, like this one, are newly manufactured by a third party to the original's size and page-yield specifications, so they drop into the same slot at a much lower price. Remanufactured supplies are emptied originals that have been cleaned and refilled.

Frequently Asked Questions

How many pages does the Dell 3K9XM Black print?

About 2,000 pages, based on Dell's rating for the original 331-0778 at roughly 5% coverage.

Which printers does it fit?

1250c, 1350cnw, 1355cn, 1355cnw, C1760nw, C1765nf and other models listed below. See the full list above, or check our Find Ink by Printer page.

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 Georgia, by USPS (2–5 business days). Expedited 1–2 day delivery is available at checkout, and shipping is free on orders over $50.