Our take
Lexmark's U.S. MX321adn is a monochrome all-in-one for an office that needs more than printed pages. The product page identifies part 36S0620 and lists print, copy, scan, and fax, with automatic print duplex, Ethernet, USB, and rated output up to 38 pages per minute. Its recommended monthly range is 500 to 6,000 pages. A 50-sheet automatic document feeder helps process multipage originals, but the source describes simplex scanning rather than automatic duplex capture. That difference matters when the originals themselves are printed on both sides. The wired adn suffix also matters: the reviewed configuration is networked over Ethernet and USB, while built-in Wi-Fi is not listed. This is a more complete workflow than a print-only device, but it needs more room and maintenance. The maker's specifications describe the model, not the current state, toner supply, or network readiness of an individual used offer. Check the nameplate for the exact suffix and part, test all four functions, confirm drivers and port access, inspect the ADF and duplex path, and review returns before choosing a listing. The link uses a tagged exact-model search because the historical ASIN is not proof of a current exact match.
A small office needing wired shared printing plus copy, scan, and fax functions with automatic two-sided output..
It is not ideal if you need built-in Wi-Fi, a compact personal printer, color output, or confirmed one-pass scanning of two-sided originals.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Lexmark documents print, copy, scan, and fax with integrated automatic print duplex.
- Ethernet and USB provide established wired connection options for a shared office.
- The 500–6,000 page recommendation and 38 ppm rating describe a workgroup-oriented role.
What to weigh up
- The reviewed U.S. configuration lists Ethernet and USB but not built-in wireless networking.
- Its 50-sheet ADF is simplex; duplex printing does not mean duplex scanning.
- Used-unit condition, supply status, and current software compatibility require separate checking.
The key details
| Model covered | MX321adn |
|---|---|
| Main functions | Print, copy, scan, and fax |
| Print output | Monochrome; up to 38 ppm |
| Two-sided printing | Automatic duplex; Ethernet and USB |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
One device for routine paper workflows
The MX321adn brings monochrome printing together with copying, scanning, and fax. That can reduce handoffs when the same office regularly prints a form, copies an incoming document, or sends a fax. These functions are useful only if people need them; a print-only model may be easier to maintain when originals are handled elsewhere. Lexmark's U.S. page identifies the exact adn configuration and part number, so keep that suffix visible when comparing offers.
Automatic print duplex, simplex feeder
Integrated automatic duplex turns sheets during two-sided print jobs. The 50-sheet ADF is a separate paper path for originals, and Lexmark's reviewed page describes a simplex feeder. Do not assume that automatic print duplex means the scanner can capture both sides of an original in one pass. For contracts or two-sided forms, check whether users can manually turn originals or whether a duplex-scanning feeder is a requirement.
Wired sharing fits the adn suffix
Lexmark lists Ethernet and USB for the MX321adn. Ethernet supports a wired shared connection, while USB can serve a directly connected workstation. Built-in Wi-Fi is not shown on the reviewed U.S. page, so a wireless requirement should lead to another exact configuration or an explicitly documented accessory. Confirm the intended port is present and permitted by the office network rather than treating all models in the MX321 family as interchangeable.
A workgroup speed and volume band
Lexmark rates the MX321adn at up to 38 pages per minute and recommends 500 to 6,000 pages monthly. These figures give a starting point for a shared black-and-white queue, but actual throughput depends on document complexity and setup. Use the recommended volume as guidance, not the much higher maximum duty cycle some listings may emphasize. A used machine's maintenance history and remaining supplies are not established by the published specification.
Consider footprint and ongoing upkeep
An MFP has more mechanisms and functions to check than a simple printer: scan glass, ADF rollers, copy controls, fax setup, print engine, and automatic duplex path. The extra capability may earn its space in a small office, but it does not remove the need to inspect each function on an older unit. Ask the seller for a configuration page and sample output, confirm the exact 36S0620 part, and verify return terms and drivers before purchase.
Choose it for wired document work
The MX321adn is a coherent option when fax, scan, and copy are regular tasks and the office can use Ethernet or USB. It is less convincing if color, built-in Wi-Fi, or duplex capture of originals is essential. Lexmark's product page supports the advertised model features and workload band, but no current seller price, stock, condition, or consumable status is implied. Use the tagged search to locate an offer, then verify the actual suffix and included components.
What else to compare
For a mono printer-only role, compare the Lexmark MS310dn. For color, wireless networking, and copy/scan functions, consider a documented color MFP such as Brother MFC-L3770CDW.
Before you buy
Does the MX321adn include fax?
Yes. Lexmark lists fax alongside print, copy, and scan for the exact U.S. MX321adn configuration.
Can it scan a two-sided original in one pass?
The reviewed U.S. page identifies a simplex 50-sheet ADF and does not establish one-pass duplex scanning.
Which network ports does it have?
Lexmark lists Ethernet and USB for MX321adn. Built-in Wi-Fi is not listed on the reviewed U.S. product 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.
- Lexmark U.S. MX321adn product page ↗ — checked October 5, 2026.
- Lexmark U.S. part 36S0620, functions, duplex, interfaces, speed, ADF, and monthly range ↗ — checked October 5, 2026.
The decision
The MX321adn suits a wired office that uses monochrome printing, copying, scanning, and fax. Its print duplex is automatic, but the reviewed feeder is simplex.
Is it the right fit?
Check the exact model and today’s offers on Amazon.