Our take
Lexmark maps part 35S6701 to the MX611de monochrome laser MFP. Its U.S. product page documents print, copy, scan, and fax, output up to 50 ppm Letter, integrated print duplex, a 50-sheet reversing duplex ADF, standard Gigabit Ethernet and USB, and a recommended monthly range of 2,000–15,000 pages. Wireless requires optional hardware rather than coming standard. The de suffix and part number distinguish this wired fax configuration from other MX611 variants.
A wired office needing fast mono fax, duplex printing, and duplex scanning for recurring document sets..
Skip it if built-in Wi-Fi is mandatory, the office needs color output, or the workload is far below its shared-office positioning.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The reversing duplex ADF can capture both sides of multi-page originals in one workflow.
- Lexmark documents fax, automatic print duplex, Ethernet, USB, and 50 ppm Letter output.
- The 2,000–15,000-page recommendation gives a broad shared-office range.
What to weigh up
- Built-in wireless is not part of the standard configuration.
- The 50 ppm rating does not prove a used unit's present speed or reliability.
- An exact de suffix and installed options need checking on a seller's device.
The key details
| Model covered | MX611de (35S6701) |
|---|---|
| Main functions | Print, copy, scan, and fax |
| Print output | Monochrome; up to 50 ppm Letter; 2,000–15,000 recommended pages per month |
| Two-sided printing | Automatic duplex; wired Ethernet and USB |
Performance figures are manufacturer claims. Source checked October 10, 2026. Regional models and included accessories can differ.
What the features mean for you
Use the de suffix to identify the wired fax model
Lexmark's U.S. page maps part 35S6701 to the MX611de. This model performs monochrome print, copy, scan, and fax functions, with Ethernet and USB listed as standard connections. The suffix is important because related MX models can differ in fax, networking, and included hardware. Check the product label rather than assuming a generic MX611 listing represents this exact de configuration. It suits a wired shared office that wants one machine for paper output and document capture.
Pair automatic duplex output with a duplex feeder
The MX611de combines integrated automatic print duplex with a 50-sheet reversing duplex ADF. The printer can turn output pages, and the feeder can process two-sided originals for scanning. These are separate functions, so confirm both when comparing MFPs. The duplex ADF can reduce manual steps for multipage forms, while the 50-sheet capacity still requires loading between longer jobs. Ask a seller to demonstrate both paper paths on a used device because manufacturer specifications cannot confirm that its rollers and sensors work.
Match 50 ppm output to a real office queue
Lexmark rates the MX611de up to 50 pages per minute on Letter. That figure makes it a plausible candidate for a busy monochrome queue, but it is a rated speed rather than an observed result for any individual machine. Mixed graphics, scan work, and host setup change the pace of a real job. Compare expected print volume with Lexmark's separate recommendation of 2,000–15,000 pages per month. The high maximum duty-cycle number is not routine workload guidance and should not replace that recommended interval.
Plan for Ethernet and optional wireless
Lexmark lists Gigabit Ethernet and USB as standard ports; wireless networking requires optional hardware. Ethernet supports a shared wired queue and USB offers a direct host connection. If a wireless placement is needed, the mere availability of an adapter does not mean it is installed or included in a used offer. Verify the exact accessory and compatibility before buying. The fixed de configuration should not be described as having built-in Wi-Fi, and a network port does not establish compatibility with every current security policy.
Consider paper workflow and maintenance together
A duplex ADF can reduce handling for two-sided originals, while the MFP's print, copy, scan, and fax functions consolidate several office tasks. That breadth is useful when those jobs are frequent; it adds little for a print-only desk. The reviewed source does not establish a particular unit's remaining consumable life, service history, page count, or included tray options. Ask for the exact model label, test pages, duplex scan demonstration, fax test, and return terms before relying on a refurbished device in a shared workflow.
What else to compare
The Brother MFC-L6750DW also combines fax, automatic duplex, wireless networking, and duplex scanning, with a 48-ppm rating and a recommendation up to 5,000 pages monthly.
Before you buy
Does the MX611de include fax?
Yes. Lexmark lists fax with print, copy, and scan for the exact MX611de configuration.
Does the 50-sheet ADF scan both sides?
Lexmark documents a reversing duplex ADF for the MX611de, allowing two-sided originals to be handled by the feeder.
Is Wi-Fi standard?
No. The standard interface list includes Ethernet and USB; Lexmark identifies wireless as an optional accessory.
What monthly range is recommended?
Lexmark recommends 2,000 to 15,000 pages per month for the MX611de.
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.
- Lexmark U.S. MX611de exact-part product specifications ↗ — checked October 10, 2026.
- Lexmark U.S. MX611de part, functions, duplex ADF, speed, interfaces, and recommended monthly range ↗ — checked October 10, 2026.
The decision
Choose the MX611de for a wired high-volume monochrome MFP whose duplex feeder, fax, and print duplex all match the office's routine.
Is it the right fit?
Check the exact model and today’s offers on Amazon.