Our take
Brother's U.S. specification identifies the HL-4040CDN as a single-pass color laser printer rated up to 21 pages per minute on Letter, with standard internal automatic duplex. It lists a 250-sheet main tray, a 50-sheet multipurpose feed, USB 2.0 and 10/100 Ethernet. The checked source does not state built-in Wi-Fi or a recommended monthly range, and it does not turn the printer into an all-in-one. The model fits a wired desk or small workgroup that wants duplex color output and some paper flexibility. Because it is an older product, confirm supported drivers and inspect the duplex path before counting on it for current daily work.
A wired office that needs color output and two-sided printing without an integrated copier or scanner..
Skip it if built-in Wi-Fi, integrated scan/copy/fax, a published monthly range, or current-model support is necessary.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Brother rates the printer at up to 21 ppm Letter in both color and monochrome.
- The exact HL-4040CDN specification lists internal automatic duplex.
- Ethernet, USB and 300 sheets of standard input are documented.
What to weigh up
- Wireless networking is not listed in the exact U.S. specification.
- A recommended monthly page range is not stated.
- Its older support profile makes driver compatibility a purchase check.
Specifications and exact model details
The key details
| Model covered | HL-4040CDN |
|---|---|
| Main functions | Color laser print only |
| Print output | Up to 21 ppm Letter with standard automatic duplex |
| Two-sided printing | 250-sheet tray plus 50-sheet multipurpose feed; USB and 10/100 Ethernet |
Performance figures are manufacturer claims. Source checked October 15, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
A color printer rather than an all-in-one
Brother identifies the HL-4040CDN as a color electrophotographic printer. The reviewed exact U.S. source describes printing rather than copy, scan or fax functions, so its fit is a shared color queue with separate document-capture equipment. This distinction matters when comparing it with multifunction models that can handle originals as well as output. Keep the CDN suffix exact: the related HL-4040CN lacks the standard duplex unit and should not inherit this model's two-sided capability. Brother's exact specification supplies the model-level details ([HL-4040CDN U.S. specifications](https://support.brother.com/g/b/spec.aspx?c=us&lang=en&prod=hl4040cdn_us)).
Automatic duplex is built into this configuration
Brother lists a standard internal duplex unit for the HL-4040CDN and rates duplex output at up to 7 sides per minute, or 3.5 sheets per minute. This is a slower two-sided rate than its simplex rating, so a buyer should not use the 21 ppm figure as an expected duplex pace. The automatic mechanism removes the need to turn stacks by hand, which helps recurring two-sided reports or handouts. Inspect the unit for a working reverse path and test a duplex job before relying on it for a deadline-driven office.
The standard trays total 300 sheets
The U.S. specification lists a 250-sheet standard tray and a 50-sheet multipurpose tray. The smaller feed can handle supported alternate jobs while the main tray holds everyday paper. Together they provide a documented 300-sheet standard input supply. Check that both trays are included, that the guides move and that the rollers feed cleanly on an older or refurbished unit. Brother lists paper and media limits separately; consult the manual before using heavier stock in the duplex path. Capacity helps plan reloads but does not supply a monthly workload recommendation.
Ethernet is documented; Wi-Fi is not
Brother lists USB 2.0 and 10/100 Base-TX Ethernet for the HL-4040CDN. Those interfaces support direct host connection and wired network sharing. The reviewed exact model specification does not list built-in wireless, so a wireless-only office should not count this as a Wi-Fi model without separate evidence of a compatible accessory. Inspect the ports and confirm a driver works on the intended computers. Brother notes that software for operating systems it no longer supports may not receive updates, making a current driver check especially important for a legacy purchase.
Volume guidance and support need a separate check
The exact U.S. specification does not give a recommended monthly page range for the HL-4040CDN. Its rated speed, 300-sheet input and maximum duty-cycle information cannot replace that recommendation. The matching profile leaves the monthly range unspecified. A buyer with a formal office target should seek exact-model guidance or compare a printer with a published band. As with any older device, assess its physical condition, available supplies and driver support. The model can still be a sensible wired duplex color option if those open issues are acceptable for the intended use.
Compare for your needs
For built-in wireless compare an exact model whose standard U.S. specification lists Wi-Fi; for integrated scanning and copying choose a color laser MFP.
Find the undefined that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Does the HL-4040CDN print automatically on both sides?
Yes. Brother lists a standard internal duplex unit for this exact CDN configuration.
How much paper does it hold?
The standard tray holds 250 sheets and the multipurpose tray holds 50.
Does Brother document Ethernet?
Yes. The U.S. specification lists 10/100 Base-TX Ethernet and USB 2.0.
Is built-in Wi-Fi listed?
No. The reviewed exact-model specification lists wired Ethernet and USB, not Wi-Fi.
What monthly page range does Brother recommend?
The checked U.S. specification does not state a recommended monthly range.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Brother U.S. HL-4040CDN specifications ↗ — checked October 15, 2026.
- Brother U.S. exact model, color speed, duplex, paper input and wired interfaces ↗ — checked October 15, 2026.
- Brother manufacturer appendix distinguishing HL-4040CDN duplex configuration from HL-4040CN ↗ — checked October 15, 2026.
The decision
The HL-4040CDN is a wired color printer with useful automatic duplex, while wireless, workload guidance and current driver fit remain open.
Is it the right fit?
Check the exact model and today’s offers on Amazon.