The "T" Buys You a Second Paper Tray

Most printers in this family arrive with one 520-sheet drawer. The DWT variant doubles that: two 520-sheet trays plus a 100-sheet multipurpose tray, 1,140 sheets on board before you add anything, and a ceiling of 1,660 sheets with an extra tray. Offices load letter in one drawer and legal or envelopes in the other and stop thinking about paper for days.

Everything else about the machine is pitched at the same scale. It prints up to 52 pages per minute at up to 1200 x 1200 dpi, carries a maximum monthly duty cycle of 160,000 pages with a recommended volume up to 16,000 pages a month, and connects over Gigabit Ethernet and dual-band Wi-Fi. The box even starts you off generously, with an 11,000-page TN920XXL cartridge already installed.

What Each Cartridge Size Costs to Run

Cartridge	Brother-rated yield	Our compatible price	Cost per page
TN920 (standard)	~3,000 pages	$36.19	About 1.21 cents
TN920XL (high yield)	~6,000 pages	$37.13	About 0.62 cents
TN920XXL (super high yield)	~11,000 pages	$38.24	About 0.35 cents
TN920UXXL (ultra high yield)	~18,000 pages	$51.68	About 0.29 cents

Prices checked on our product pages on November 2, 2026. Read the table the way an accounts department would: the standard cartridge is the most expensive way to feed this printer by a wide margin, and the price gap between sizes is small compared with the yield gap. A workgroup printing near the recommended 16,000 pages a month can burn through a standard cartridge in under a week; the UXXL stretches that same interval past a month.

One Warning: This Model's Drum Is the DR925

Here is the detail that trips up even experienced buyers. Most TN920 printers pair their toner with a DR920 drum. The HL-L6415DWT does not. Brother specifies the DR925 drum unit for this machine, rated at approximately 75,000 pages based on three-page print jobs (about 45,000 pages on single-page jobs). A DR920 will not do the job here, so check the part number on the box before any drum order, ours or anyone else's.

The practical side is reassuring. At the recommended monthly volume, a DR925 should last well over a year of heavy service, and because the drum is separate from the toner, a fading page is almost never a drum emergency: pale output means toner, while repeating marks or a grey background that survives a cartridge swap point at the drum.

Swapping the Toner

1. Keep the machine switched on and pull the front cover open. 2. Grip the handle of the drum and toner assembly and slide the whole unit out. 3. Push the green lock lever down and lift the spent cartridge free of the drum frame. 4. Unpack the replacement, rock it side to side half a dozen times to level the powder, then peel off its protective covering. 5. Set the new cartridge into the drum frame and press until it clicks home. 6. Run the drum's green cleaning tab from one side to the other and back to its arrow mark, slide the assembly in, and shut the cover.

Should a new cartridge draw a "not recognized" complaint or the toner level refuse to reset, work through our TN920 recognition and reset guide before assuming the cartridge is at fault.

Drum-Day Economics, Without a Bundle to Sell You

We are upfront about this: we do not currently stock a compatible DR925, and we do not link OEM product pages from this guide, so there is no toner-and-drum set to point you at for this model. What we can give you is the arithmetic. Drum changes on an HL-L6415DWT are rare events separated by tens of thousands of pages, while toner changes are routine — so the running-cost battle is won or lost on the cartridge table above, not on the drum. Keep a UXXL on the shelf as your spare and the per-page cost stays under a third of a cent; treat the eventual DR925 as a planned maintenance purchase, the way you would a fuser, rather than a surprise.

Security deserves the last word on hardware, because it is half the reason this model exists. An integrated NFC card reader lets staff release jobs with a badge tap, Triple Layer Security guards the network connection, the device and the document, and the machine passed Keypoint Intelligence's BLI Security Validation Testing. A 3.5-inch color touchscreen runs the whole show from the front panel.

Frequently Asked Questions

Does the HL-L6415DWT really need the DR925 instead of the DR920? Yes. Brother's specification for this model names the DR925 drum unit, rated around 75,000 pages. The DR920 belongs to the family's smaller machines and is not the specified unit here.

What is the TN925 I see listed for this printer? It is Brother's max-yield cartridge for this platform, rated around 25,000 pages. It sits above the TN920 family rather than inside it. We do not sell a compatible TN925, so the largest cartridge in our range for this machine is the 18,000-page TN920UXXL.

How long will the cartridge that came in the box last? Brother ships the HL-L6415DWT with an 11,000-page TN920XXL. At 5,000 pages a month that is roughly two months of printing before your first purchase; at lighter volumes, much longer.

Can the two trays hold different paper sizes at once? That is exactly what they are for. Letter in one 520-sheet tray, legal or a second stock in the other, and the 100-sheet multipurpose tray handles envelopes and odd sizes without disturbing either drawer.

Does the printer support badge release printing? Yes. The built-in NFC card reader works with the machine's security features so users authenticate at the panel with a card or badge before their jobs print.

Other Printers That Use TN920 Toner

The same four cartridge sizes also power the models below. Watch the drum, though: most of them pair the toner with the DR920, but the HL-L5215DW and MFC-L5715DW share this model's DR925 instead:

• HL-L5210DN
• HL-L5210DW
• HL-L5215DW
• HL-L6210DW
• HL-L6310DW
• HL-L6415DW
• DCP-L5510DN
• MFC-L5710DW
• MFC-L5715DW
• MFC-L5915DW
• MFC-L6810DW

Ready to order? Start from our HL-L6415DWT toner page, which lists every cartridge that fits this printer.