Our take
The Brother MFC-8670DN is a wired monochrome MFP for offices that need print, copy, color scan and fax from one machine. Brother rates it up to 30 ppm Letter and lists automatic duplex, a 50-sheet ADF, a 250-sheet main tray and an additional 50-sheet MP tray. Ethernet, USB and parallel provide connection choices, but no wireless interface is listed. Brother labels the model discontinued and gives no recommended monthly print range in the reviewed specification.
A wired office looking for a legacy monochrome fax MFP with automatic duplex and a 50-sheet document feeder..
It is not a match for color printing, built-in Wi-Fi, a newer model with a published workload range or a compact personal printer with simple setup.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The 50-sheet ADF and fax support multi-page document handling without a separate fax device.
- Automatic duplex printing avoids manual page turning for two-sided output.
- Ethernet, USB 2.0 and parallel are documented for the exact MFC-8670DN.
What to weigh up
- The output is monochrome even though the scanner can capture color originals.
- Brother marks the product discontinued, so confirm driver, parts and supply compatibility for the intended setup.
- The manufacturer source does not publish a recommended monthly print range.
Specifications and exact model details
The key details
| Model covered | MFC-8670DN |
|---|---|
| Main functions | Monochrome print, copy, color scan and fax |
| Print output | Up to 30 ppm Letter; 50-sheet ADF; 250-sheet tray |
| Two-sided printing | Automatic duplex; Ethernet, USB 2.0 and parallel |
Performance figures are manufacturer claims. Source checked October 17, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
One wired device for print, copy, scan and fax
Brother lists monochrome printing, copying, color scanning and fax for the MFC-8670DN. This combination suits an office that still receives paper originals and sends faxes, while keeping printed output black and white. Color scanning is a separate capability from color printing; the model does not satisfy a request for color pages. The fax functions include phone-line workflow tools, while the document feeder helps move originals through a batch. Buyers should confirm that the office still needs those functions before choosing an older all-in-one.
Automatic duplex and the 50-sheet ADF reduce handling
Brother lists automatic duplex printing and an ADF capacity of up to 50 pages. The duplex unit handles newly printed pages, while the ADF feeds originals into copy, scan or fax jobs. Together they reduce manual paper turning and repeated placement for common two-sided office work. The source does not establish a duplex scanning path, so the feeder should not be described as capturing both sides of an original in one pass. This distinction matters for offices that routinely digitize double-sided forms.
A standard tray plus a separate multipurpose feed
Brother specifies a 250-sheet main tray, a 50-sheet multipurpose tray and a 150-sheet face-down output capacity. The MP tray can keep special media or a small second paper type available without replacing the main tray stack. The 300-sheet total input is more substantial than a small desktop printer but is not a substitute for an office high-capacity drawer. Consider how often the group prints long jobs and whether the tray arrangement matches its paper sizes and regular media.
Ethernet, USB and parallel are listed; Wi-Fi is not
The exact Brother specification names Ethernet 10/100 BaseTX, high-speed USB 2.0 and a parallel interface. Ethernet can support a wired shared printer and scanner, while USB provides local attachment; parallel may matter for older equipment. The page does not list built-in Wi-Fi. A historical listing title that calls the device wireless should not override Brother's model-specific connection table. Buyers who need wireless placement should compare a model with a documented Wi-Fi radio instead of assuming an adapter is included.
Use the print rating as a comparison point
Brother rates the MFC-8670DN at up to 30 pages per minute on Letter paper. That figure helps compare it with slower desk printers, but actual time depends on job type and setup. The manufacturer page reviewed here does not specify a recommended monthly print range, so the finder leaves that attribute unknown. Do not replace the missing recommendation with the maximum duty cycle or with a workload estimate from a nearby Brother model. The ADF, tray capacities and wired interfaces provide better-supported planning details.
Treat the discontinued status as a setup question
Brother labels the MFC-8670DN discontinued and says its specification page is no longer updated. That does not erase the documented hardware features, but it makes the intended computer, driver path and supply availability worth confirming before purchase. Inspect the ADF rollers, scan glass, duplex path and fax connection on any particular unit. The saved model facts do not establish current stock, included toner, condition or warranty. The Amazon link searches the exact model name and carries no claim that a result is a new or tested unit.
Compare for your needs
The HP M528c adds a faster 100-sheet duplex ADF and a published monthly range; the released MFC-7360N is another Brother mono fax model but does not have automatic duplex.
Find the undefined that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Does the MFC-8670DN print in color?
No. Brother documents monochrome printing, although its scanner can capture color originals.
Does it include fax and automatic duplex?
Yes. Brother lists fax functions and automatic duplex printing for the MFC-8670DN.
Is wireless networking built in?
Brother lists Ethernet, USB and parallel but does not list Wi-Fi for this exact model.
What monthly print volume does Brother recommend?
The reviewed Brother specification does not state a recommended monthly print range for this model.
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. MFC-8670DN specifications ↗ — checked October 17, 2026.
- Brother U.S. MFC-8670DN exact specifications: paper, duplex, interfaces, fax, print and scan ↗ — checked October 17, 2026.
The decision
Choose the MFC-8670DN for its wired fax and duplex workflow only after checking condition, supplies and current driver support.
Is it the right fit?
Check the exact model and today’s offers on Amazon.