SKU:

CS-Bro-OEM-TN540-BK

Printer Brand:

Brother

OEM Number:

TN540

Ink Color:

Black

Page Yield:

3,500 Pages

Printer Type:

Laser Cartridge

Condition:

New

Frequently Asked Questions

TN540 or TN550 — both are 3,500-page black cartridges; which one is mine?

This is the most common mix-up on Brother's older mono platforms, so here is the clean split. This TN540BK belongs to the earlier generation: the HL-5130, HL-5140, HL-5150D and HL-5170DN printers, the DCP-8040 and DCP-8045D, and the MFC-8120, MFC-8220, MFC-8440, MFC-8640D and MFC-8840D multifunctions, all running the DR510 drum. The TN550BK belongs to the generation that followed — HL-5240, MFC-8860DN and family, with the DR520 drum. Same yield, similar names, zero interchangeability. The code on the cartridge you pull out settles it: TN540 out, TN540 in.

What does the TN540BK cost per page?

It is rated at 3,500 pages and priced at $113.05 here — $45.22 below the $158.27 list — which is about 3.2 cents a page. That is honest standard-yield economics, and we will put the alternative on the table: its high-yield sibling, the TN570BK, gives 6,700 pages at roughly 1.9 cents a page for $130.17. If this printer prints every week, the TN570BK is the better-value cartridge. The TN540BK earns its place for light use, short horizons and smaller one-off outlays.

Why keep a cartridge in production for a platform this old?

Because the HL-5140 generation earned its longevity. These printers and the MFC-8220 / MFC-8440 multifunctions built around them are simple, repairable and still working in small offices everywhere — and a machine that works should not be retired over a toner cartridge. Genuine TN540BK supply at $113.05 is what lets owners keep a dependable printer in service for a few dollars a month instead of replacing a whole setup.

What tells me the cartridge, not the DR510 drum, is finished?

Fading that creeps in evenly across the page, lightest at the end of long runs, is this cartridge emptying. The drum's failures look different — the same mark repeating at a fixed interval, or a background shade that stays identical after you change toner. There is also the machine's own testimony: it tracks toner and drum separately on this platform, so believe the indicator that is actually lit. Fitting a TN540BK when the drum is the problem buys you nothing; the test with a known-good cartridge keeps you honest.

Can I stretch a fading TN540BK a little further?

A short reprieve, yes: take the cartridge out, rock it gently from side to side to redistribute the remaining toner, and refit it. On this generation that commonly buys a few dozen to a few hundred acceptable pages — enough to finish a job or bridge the wait for a delivery. Treat it as a bridge, not a strategy; output density will keep sliding, and a spare on the shelf is the real answer for a printer you depend on.

What protection comes with this purchase?

Returns on genuine Brother products run for 30 days from delivery with us, no matter the reason, and Brother's manufacturer warranty covers the cartridge against defects — the full wording lives on our shipping and returns page. Given the TN540/TN550 confusion above, if the wrong cartridge arrives, raise it with our support team Monday to Friday, 9 AM to 5 PM CST, inside that window.

About This Brother TN540BK Genuine Toner Cartridge

The genuine Brother TN540BK is the 3,500-page standard-yield black cartridge for the HL-5140 / HL-5170DN and MFC-8220 / MFC-8440 mono generation, priced at $113.05 against a $158.27 list. It partners the DR510 drum and has a high-yield sibling, the TN570BK, for heavier use. The rest of the platform's genuine supplies are in our Brother catalogue. Orders ship from our IL, PA, GA or CA warehouses.