Our take
Brother's U.S. product page identifies the MFC-L6750DW as a monochrome laser all-in-one rated up to 48 ppm. It documents print, copy, scan, and fax, automatic duplex printing, duplex scanning, a 70-sheet ADF, Wi-Fi, Gigabit Ethernet, USB, and 520 sheets of standard input plus a 50-sheet multipurpose tray. Brother recommends use up to 5,000 pages per month but gives no lower endpoint. Its maximum duty cycle is separate from that recommendation.
A shared mono office needing fax and two-sided document handling with both wireless and wired network choices..
Choose a simpler printer for a light print-only desk, or another model if a two-ended recommended workload interval is required.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The duplex ADF can capture two-sided originals in one pass.
- Wi-Fi, Gigabit Ethernet, and USB offer several standard connection choices.
- A 48-ppm rating and 520-sheet tray suit a regular shared mono routine.
What to weigh up
- The monthly recommendation supplies only an upper endpoint.
- Additional paper trays are optional and should not be assumed in an offer.
- The spec does not establish the condition or supply level of a particular used unit.
The key details
| Model covered | MFC-L6750DW |
|---|---|
| Main functions | Monochrome print, copy, scan, and fax |
| Print output | Up to 48 ppm; recommended up to 5,000 pages per month |
| Two-sided printing | Automatic duplex; Wi-Fi, Gigabit Ethernet, and duplex ADF |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
Bring fax and document capture into the same device
Brother lists monochrome print, copy, scan, and fax on the MFC-L6750DW. A shared office can use one system for outgoing pages and incoming paper workflows, while the scanner supports color capture even though the print engine is monochrome. Check phone-line and scan-destination requirements against the intended setup. A single multifunction device may reduce handoffs, but it also creates a common point to maintain. A print-only machine is the better fit when copy, scan, and fax will not be used.
Use duplex on print and scan jobs
Brother documents automatic duplex printing and duplex scanning, with a 70-sheet ADF. The printer can turn outgoing sheets, and the feeder can capture both sides of a multipage original. Those features make the model relevant to recurring two-sided document routines without claiming that every copy setting is automatic. Brother lists duplex copy as supported as well. Test the ADF, scanner, and print duplex on a used machine; the product page cannot prove that the moving parts remain aligned or reliable.
Choose a wired or wireless network path
The MFC-L6750DW includes 802.11b/g/n Wi-Fi, Gigabit Ethernet, and USB. Wireless can help place a shared device without an Ethernet run, while Gigabit Ethernet suits a fixed office queue. USB supports direct attachment. These interfaces still depend on current drivers, network security settings, and software support, so verify them before installation. The source documents the standard model configuration, not whether a particular seller includes a working network setup or whether the office's policy accepts the device.
Compare the upper workload guidance carefully
Brother recommends use up to 5,000 pages per month, but the reviewed page does not state a lower endpoint. Preserve that one-sided guidance rather than inventing a minimum. The 100,000-page maximum duty cycle is a different measure and should not be used as a normal monthly target. The 48-ppm rating and the standard paper capacity help describe the machine's role, but neither replaces a recommended volume range. Estimate the office's ordinary monthly output and seek more exact guidance if a threshold is important.
Plan capacity around the standard tray set
Brother lists 520 sheets of standard input plus a 50-sheet multipurpose tray, with 250- or 520-sheet optional drawers available separately. The base capacity can reduce refills for a shared routine, while optional trays can extend it if present. Confirm the actual number of installed drawers and the included stand before comparing offers. The 70-sheet ADF holds originals rather than print stock, so it should not be counted as input paper. Check toner and drum state, page count, service history, and return terms on a used unit.
What else to compare
The Lexmark MX611de is rated up to 50 ppm and has a 50-sheet reversing duplex ADF with a 2,000–15,000-page recommendation, but wireless requires optional hardware.
Before you buy
Does the MFC-L6750DW include fax?
Yes. Brother identifies the exact MFC-L6750DW as a monochrome laser all-in-one with fax.
Can the ADF scan both sides automatically?
Yes. Brother lists duplex scanning and a 70-sheet ADF for the MFC-L6750DW.
Which network connections are standard?
Brother lists Wi-Fi, Gigabit Ethernet, and USB as standard interfaces.
What monthly workload does Brother recommend?
Brother recommends up to 5,000 pages per month and does not state a lower endpoint in the reviewed page.
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 & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Brother U.S. MFC-L6750DW product specifications ↗ — checked October 11, 2026.
- Brother U.S. MFC-L6750DW functions, speed, duplex print/scan/copy/fax, connections, paper, and recommended volume ↗ — checked October 11, 2026.
The decision
Choose the MFC-L6750DW for a shared monochrome fax and duplex-scan workflow with Wi-Fi and Ethernet; compare its one-sided workload guidance with the office's actual volume.
Is it the right fit?
Check the exact model and today’s offers on Amazon.