Start With the Wired-Only Reality

Plenty of owners hunt through the HL-4150CDN's menus looking for a Wi-Fi setup wizard that does not exist. This is a network printer in the older sense: it joins the office through its built-in Ethernet port or connects to one computer by USB. There is no wireless radio to configure and no app pairing to troubleshoot. In exchange you get a machine that simply stays on the network, prints in colour or black at up to 25 pages per minute, and turns sheets over automatically with standard duplex printing.

That wired identity matters for supplies, too. A printer that serves a whole workgroup from a network jack burns through colour cartridges faster than a personal desktop unit, which is exactly the situation the TN315 high-yield size was made for.

Yields for Every Colour

Colour	TN310 (standard)	TN315 (high yield)
Black	~2,500 pages	~4,000 pages
Cyan	~1,500 pages	~3,500 pages
Magenta	~1,500 pages	~3,500 pages
Yellow	~1,500 pages	~3,500 pages

Brother rates these to ISO/IEC 19798. Notice the colour jump: a TN315 colour cartridge delivers well over twice its TN310 equivalent, while black gains about 60 percent. Offices printing charts, letterheads and presentations feel the high-yield upgrade in colour long before they feel it in black.

What Each Page Costs at Our Prices

One shelf fact simplifies the decision here. On our store the TN310 and TN315 singles carry the same prices — black at $28.33 and each colour at $30.38 — so the high-yield cartridge is not a premium upgrade; it is the same money for more pages.

• TN310BK standard black: $28.33 ÷ 2,500 pages ≈ 1.1 cents per page
• TN310C, TN310M, TN310Y standard colours: $30.38 ÷ 1,500 pages ≈ 2.0 cents per page
• TN315BK high-yield black: $28.33 ÷ 4,000 pages ≈ 0.7 cents per page
• TN315C, TN315M, TN315Y high-yield colours: $30.38 ÷ 3,500 pages ≈ 0.9 cents per page

At price parity the TN315 wins on running cost in every colour. The standard size only makes sense for a printer that is about to be retired or prints a handful of pages a month.

Paper, Speed and the Walk-Up USB Port

The main tray holds 250 sheets of letter or legal paper, a 50-sheet multipurpose tray handles envelopes and thicker stock, and an optional 500-sheet tray lifts total capacity to 800 sheets. A front USB host port lets you print PDF, JPEG, XPS and Secure PDF files straight from a flash drive — handy when the network is down or a visitor needs one document printed without a driver install. Output quality is up to 2400 × 600 dpi, which is why so many of these machines ended up printing brochures and presentations rather than plain memos.

Changing a Cartridge

Leave the printer on and open the front cover. The drum-and-toner assembly for each colour slides out on its own track; work on one colour at a time. Pull the assembly toward you, press the green lock lever, and lift the spent cartridge out of its drum. Rock the replacement gently from side to side, pull off its protective cover, and click it into the drum until the lever rises. Slide the drum's green corona-wire tab across and back, return the assembly, and close the cover. If the screen still shows the old cartridge, the counter reset for that colour — described in the machine's manual — is the fix, not reseating the cartridge repeatedly.

The Drum Underneath

Each toner cartridge clicks into its own DR310CL drum unit, and the four drums are normally replaced together as a set at around 25,000 pages. A belt unit and a waste toner box also live inside the machine on much longer cycles of roughly 50,000 pages each. We do not currently sell a compatible DR310CL, so there is no drum link in this guide; when print quality develops repeating marks or a grey background that a fresh toner does not cure, the drum set is the part to price up in genuine form.

Sets vs. Singles: The Honest Version

When several colours run low together, a four-colour set beats four separate orders. Our TN315 four-colour set is $71.24 against $119.47 for the same four cartridges bought one at a time — a saving of about $48. The TN310 four-colour set is the same $71.24 for the standard size. The counter-case still applies: if only the yellow is empty and the other three cartridges are nearly new, buy the single yellow. Sets reward a full refresh, not a one-colour top-up.

Questions Owners Ask About This Model

Can I mix TN310 and TN315 cartridges in the same printer? Yes. Each colour slot accepts either size independently, so a TN315 black can run alongside TN310 colours while you use up stock.

Will a TN315 fit my HL-4150CDN even though it shipped with TN310 cartridges? Yes. The starter cartridges in the box were the standard size; the high-yield TN315 is a factory-supported upgrade for this model, not a workaround.

Why does the printer say "Replace Drum" when the copies still look fine? The DR310CL counter is page-based, not quality-based. You can usually print on for a while, but budget for the drum set — faded bands and repeating spots are the signs it is truly done.

Does the HL-4150CDN print from phones? Only through the network it is wired into, using Brother's iPrint&Scan app on the same LAN. There is no Wi-Fi Direct or AirPrint radio in this model; if phone printing without cables is essential, that is a printer feature, not a toner decision.

Is the TN315 the biggest cartridge this printer takes? Yes. Brother's range for the HL-4150CDN stops at TN315. Larger cartridges advertised for later Brother colour lasers do not fit this machine.

Other Printers That Use TN310 and TN315

The same two cartridge sizes and the same DR310CL drum set also fit: HL-4570CDW, HL-4570CDWT, MFC-9460CDN, MFC-9560CDW and MFC-9970CDW. Spares on the shelf carry over to any of them.

Ready to order? Start from our HL-4150CDN toner page, which gathers every cartridge and set that fits this printer.