Our take
Brother identifies the HL-1670N as an electrophotographic laser printer rated up to 16 pages per minute, with a built-in duplex unit, a 250-sheet cassette and a 100-sheet multipurpose tray. Standard interfaces include USB and parallel; the specification also lists a 10/100Base-TX network interface. Brother marks the model discontinued and says the page is no longer updated. It suits a narrow legacy-document workflow where wired sharing and automatic two-sided output matter more than current-platform assurances.
A buyer who needs a legacy mono printer with automatic duplex and can verify its network card, driver support and working condition..
Avoid it if you need color, current manufacturer support, wireless printing, or a verified driver path for a recent operating system.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Brother specifies a built-in duplex unit rather than an optional add-on.
- The cassette and multipurpose tray provide separate paper sources for common stock and special media.
- Brother lists USB, parallel and a 10/100Base-TX network interface for this N model.
What to weigh up
- The model is discontinued and the manufacturer says its specification page is no longer updated.
- No recommended monthly page range is stated in the reviewed source.
- The specific network interface card should be confirmed in the individual used unit.
Specifications and exact model details
The key details
| Model covered | HL-1670N |
|---|---|
| Main functions | Monochrome laser; up to 16 ppm; built-in automatic duplex |
| Print output | 250-sheet cassette plus 100-sheet multipurpose tray |
| Two-sided printing | USB and parallel; 10/100Base-TX interface must be confirmed on the unit |
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
What the N model is for
Brother calls this an electrophotographic laser printer and rates it up to 16 pages per minute. It is a print-only, monochrome design, so it fits text, forms and other black-and-white documents rather than color work or copy-and-scan tasks. The N suffix identifies the network-oriented version in Brother's model family. Keep the exact HL-1670N name in the search and on the rating label; a similar HL-1650 or HL-1670 without the suffix is not proof of the same network configuration.
Automatic duplex without a separate unit
Brother lists a built-in duplex unit and gives a duplex rate of up to 3.75 pages per minute. That is a lower rated pace than its simplex figure, so a buyer printing frequent two-sided packets should plan around the duplex rating rather than expect every job to run at 16 ppm. Automatic page turning reduces hand sorting, but it does not make the printer fast for every workload. Check that the duplex path is present and unobstructed on a used machine before relying on it for routine jobs.
Two standard ways to feed paper
The standard cassette holds up to 250 sheets and the multipurpose tray up to 100. Brother lists plain, bond and recycled paper, envelopes, labels and transparencies for the multipurpose tray, with the cassette handling common cut-sheet stocks. Separate feed paths can help when a small office switches between letterhead and ordinary paper, though the source does not establish automatic tray selection for every setup. Match the paper sizes and weights in the manual to the work before buying specialty stock.
Check the network card and host
Brother lists USB and IEEE 1284 parallel as standard interfaces and identifies an NC-4100h 10/100Base-TX network interface. This makes the model potentially useful on a wired office network, but the product page does not tell you whether every secondhand package still contains the card. Ask for a photo of the installed network connection and verify that the device can obtain an address on the intended network. The listed driver operating systems are historical; current computer and server compatibility should be checked separately.
Treat age and workload as separate questions
The specification says the model is discontinued and is no longer updated. That does not erase the documented duplex and paper features, but it does make parts, consumables and current software support offer-specific questions. Brother does not state a recommended monthly page range in the reviewed page, so this review does not convert the 16 ppm rating into a workload recommendation. A department with predictable long runs should consider a model with explicit volume guidance and current support instead.
What to inspect before choosing
The tagged Amazon link is a model search rather than proof of a particular listing or ASIN. For an individual unit, ask for the HL-1670N nameplate, a print sample, a duplex sample, the network card, cassette and multipurpose tray, and a report of any error lights. Check toner and drum status, operating-system drivers, and return terms before purchase. This review follows Brother's published specifications and makes no claim about present stock, price, seller condition or hands-on performance.
Compare for your needs
For current wireless printing, compare a newer mono model; for a wired legacy setup with stronger volume guidance, shortlist an exact enterprise configuration.
Find the undefined that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Does the HL-1670N print on both sides automatically?
Brother lists a built-in duplex unit and a duplex printing speed for the exact HL-1670N.
How much paper does its standard input hold?
Brother lists a 250-sheet cassette and a separate multipurpose tray with capacity up to 100 sheets.
Does every used HL-1670N include Ethernet?
The specification lists an NC-4100h network interface, but confirm that the card is installed in the individual unit.
What workload does Brother recommend each month?
The reviewed specification does not state a recommended monthly page range for the HL-1670N.
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 HL-1670N specifications ↗ — checked October 15, 2026.
- Brother exact HL-1670N technology, speed, interfaces, paper handling and built-in duplex specifications ↗ — checked October 15, 2026.
The decision
Choose the HL-1670N only when the documented duplex path and installed network interface suit a legacy wired workflow and the individual unit passes inspection.
Is it the right fit?
Check the exact model and today’s offers on Amazon.