Our take
The HP LaserJet Pro 400 M401dne is a monochrome print-only office printer with automatic duplex and built-in wired networking. HP identifies product CF399A, rates it up to 35 pages per minute on Letter and 33 on A4, and recommends 750 to 3,000 pages monthly. Standard input is a 50-sheet multipurpose tray plus a 250-sheet main tray, for 300 sheets; an optional 500-sheet Tray 3 is separate. Gigabit Ethernet and Hi-Speed USB 2.0 are documented, while built-in wireless is not. HP marks the model discontinued. It is a useful comparison for a wired small office that wants automatic page turning and a moderate published volume, provided the exact unit's condition, supplies, and software support can be checked.
A wired small office wanting a quick monochrome printer with automatic duplex and moderate recommended monthly volume..
It is not a match for wireless-only placement, color output, copy or scan functions, or buyers who need a current supported model with assured supplies.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The M401dne includes standard automatic duplex and is not interchangeable with other M401 suffix configurations.
- Gigabit Ethernet and USB support a wired shared queue or direct workstation connection.
- HP recommends 750–3,000 pages monthly and documents 300 sheets of standard input with optional expansion.
What to weigh up
- Built-in wireless is not documented, so the model needs Ethernet or a direct USB path unless separately verified hardware is added.
- The M401dne is discontinued, making current parts, toner, driver support, and unit condition material questions.
- The historical renewed listing does not establish what a present seller offers or the condition of a particular unit.
The key details
| Model covered | M401dne |
|---|---|
| Main functions | Print only |
| Print output | Monochrome laser; up to 35 ppm Letter / 33 ppm A4 |
| Two-sided printing | Automatic duplex; 300-sheet standard input |
Performance figures are manufacturer claims. Source checked October 4, 2026. Regional models and included accessories can differ.
What the features mean for you
A focused monochrome office printer
HP specifies the M401dne as a print-only monochrome model. It can suit a desk or small team that needs document output and has copying or scanning covered elsewhere. The exact product number is CF399A; this is a separate M401 suffix configuration from the saved M401n, so features should not be transferred across the family. HP marks the M401dne discontinued. That does not change the original feature set, but it does change how carefully a buyer should check service support and the condition of any used or renewed printer.
Automatic duplex supports recurring two-sided jobs
HP documents a standard automatic duplexer on the M401dne. The printer can turn sheets during a two-sided job rather than asking the operator to reload them. Up to 35 pages per minute on Letter and 33 on A4 provides a rated comparison point, while the separate 50,000-page duty cycle is not the recommended monthly workload. These figures are manufacturer specifications rather than a performance test of a particular machine. If duplex is central, check the exact CF399A label and print a two-sided sample on the offered unit instead of trusting a listing that says only M401 series.
The base paper path is expandable
Standard input totals 300 sheets: 50 in the multipurpose Tray 1 and 250 in Tray 2. HP documents an optional 500-sheet Tray 3, but it is not part of the standard configuration. Output is rated at 150 sheets. This setup can handle everyday office pages and alternate stock through the multipurpose tray, with the option to add capacity if the accessory is actually installed. A used listing may omit optional hardware, so compare the configuration physically and check that each tray feeds correctly before treating the expanded capacity as part of the purchase.
A published moderate monthly range
HP recommends 750 to 3,000 pages per month for the M401dne. That gives a small office a workload reference and distinguishes it from higher-volume enterprise printers, without guaranteeing the health of a printer that has already been used for years. The 50,000-page maximum duty-cycle figure is a ceiling and should not replace the recommendation. Estimate normal monthly demand, then consider the age and service history of the actual device. A model's capacity does not reveal how much life remains in its fuser, pickup rollers, or installed toner.
Ethernet and USB are the documented connections
HP lists built-in Gigabit Ethernet and Hi-Speed USB 2.0. Those interfaces suit a networked office or a computer connected directly by cable. The M401dne does not have built-in wireless in the saved model specification, so a wireless-only location needs a separate confirmed arrangement or another printer. Do not treat a bundle or the broader LaserJet Pro name as proof of a radio. Confirm the port panel and network setup on the exact machine and check that the intended computers still have a workable driver path.
A discontinued model needs exact offer checks
HP's original product page marks the M401dne discontinued. The old Amazon page returned a cache miss, so ASIN B07DPB1TVM is not used as a current product link. A tagged search for M401dne and CF399A keeps the destination tied to the exact model without claiming a particular offer. Before purchase, confirm the product label, installed trays, duplex operation, included toner, page count if available, return terms, and software support. The saved documentation supports the specification discussion; it does not establish present stock, seller condition, or a repair service for an individual printer.
What else to compare
Compare the HP M401n only after checking its separate feature configuration, or choose a newer network printer if current support and built-in Wi-Fi are requirements.
Before you buy
Does the M401dne include automatic duplex?
Yes. HP's exact M401dne sources list standard automatic duplex for product CF399A.
Can I print over Wi-Fi?
HP documents Gigabit Ethernet and USB for this model; built-in wireless is not included in the saved exact-model specification.
What input capacity is standard?
HP lists a 50-sheet multipurpose tray and 250-sheet main tray, totaling 300 sheets before the optional third tray.
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.
- HP LaserJet Pro 400 M401dne product page and specifications ↗ — checked October 4, 2026.
- HP M401dne product page, CF399A identity, duplex, network, trays, lifecycle and monthly recommendation ↗ — checked October 4, 2026.
- HP M401dne support specifications, exact model, speed, volume, output and optional tray details ↗ — checked October 4, 2026.
The decision
The M401dne offers a clear wired office role with automatic duplex and moderate workload guidance. Its discontinued status and lack of documented built-in Wi-Fi make exact-unit checks part of the decision.
Is it the right fit?
Check the exact model and today’s offers on Amazon.