MFC-9840 Toner | Compatible & Genuine Brother TN110 / TN115

MFC-9840

Built for the wired office, the Brother MFC-9840 delivers full color multifunction capability without the wireless price premium. It prints and copies at up to 21 ppm in color and mono, scans and faxes with a 33.6K Super G3 modem, and runs TN110/TN115 toner cartridges for economical high-yield output. A straightforward Ethernet connection keeps it humming on a small business network where WiFi simply isn't needed.

Cartridge	Type	Colors	Approx. Yield
Brother TN110 (compatible)	Standard-yield toner	Black, Cyan, Magenta, Yellow	Black: 2,500 pages; Color: 1,500 pages
Brother TN115 (compatible)	High-yield toner	Black, Cyan, Magenta, Yellow	Black: 5,000 pages; Color: 4,000 pages
Brother TN110 (genuine OEM)	Standard-yield toner	Black, Cyan, Magenta, Yellow	Black: 2,500 pages; Color: 1,500 pages
Brother TN115 (genuine OEM)	High-yield toner	Black, Cyan, Magenta, Yellow	Black: 5,000 pages; Color: 4,000 pages

Frequently Asked Questions

Which toner does the Brother MFC-9840 use?

The MFC-9840 uses four toner cartridges — black, cyan, magenta and yellow — in either the standard-yield Brother TN110 series (black ~2,500 pages, color ~1,500 pages each) or the high-yield Brother TN115 series (black ~5,000 pages, color ~4,000 pages each).

What is the difference between the TN110 and the TN115?

Both fit the same printers. The TN115 is the high-yield version — about 5,000 black pages versus about 2,500 for the TN110, and about 4,000 pages per color versus about 1,500 — so it costs less per page if you print a lot of color.

Are the cartridges on this page original or compatible?

Both — this page carries compatible TN110 and TN115 replacements as well as genuine Brother OEM TN110 and TN115 toner cartridges.

Can I mix TN110 and TN115 cartridges in the MFC-9840?

Yes — the TN110 and TN115 series are interchangeable in the same machine, so you can use a high-yield black TN115 with standard-yield color TN110s, for example.