Our take
The HP LaserJet 2420dn is a monochrome print-only printer with automatic duplex and embedded Ethernet. HP identifies part Q5959A#ABA as the exact dn model; its 2400-series guide rates the 2420 family at up to 30 pages per minute on Letter paper and documents a 250-sheet main tray plus a 100-sheet manual-feed tray. The dn suffix matters: the guide specifies that 2420dn includes the duplex accessory and network server. This is a legacy wired choice, not a wireless all-in-one. HP’s reviewed sources do not state a recommended monthly range, so do not size it from the separate duty-cycle maximum.
A wired office that needs a legacy monochrome printer with automatic duplex and can verify the exact unit and driver path..
Skip it if you need Wi-Fi, copy and scan functions, or a manufacturer-recommended monthly page range for workload matching.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- HP maps Q5959A#ABA to the exact 2420dn configuration.
- The dn model includes automatic duplex and embedded 10/100 Ethernet.
- A 250-sheet cassette and 100-sheet manual feed support routine and alternate paper jobs.
What to weigh up
- The reviewed configuration does not list built-in wireless networking.
- HP does not establish a comparable recommended monthly volume in the cited sources.
- As a legacy print-only device, current driver and used-unit condition need independent checking.
The key details
| Model covered | 2420dn (Q5959A#ABA) |
|---|---|
| Main functions | Print only; monochrome laser |
| Print output | Up to 30 ppm Letter; recommended monthly volume not stated |
| Two-sided printing | Automatic duplex; Ethernet, USB and parallel |
Performance figures are manufacturer claims. Source checked October 9, 2026. Regional models and included accessories can differ.
What the features mean for you
A wired mono printer rather than an all-in-one
HP identifies the LaserJet 2420dn as a monochrome printer with no copy, scan or fax functions. Its role is to serve black-and-white document output while those tasks remain with separate equipment. HP’s U.S. page ties product Q5959A#ABA to the exact dn suffix, which helps distinguish it from the 2420, 2420d and 2420n configurations. That distinction matters because network and duplex features differ across suffixes. If the office needs document capture or fax in the same station, choose an MFP rather than assuming the 2420dn can replace one.
Automatic duplex is part of the dn configuration
HP’s 2400-series guide says 2420dn includes a duplex-printing accessory for automatic two-sided output. This is a meaningful difference from a model that requires users to reload paper between passes. For regular reports or internal packets, automatic page turning can remove a manual step and keep page order consistent. The guide’s suffix-specific wording is important: do not carry the same claim across the entire 2420 family without checking which product is offered. Confirm the exact label and the installed unit when buying a used printer, because manufacturer documentation cannot establish the condition of a particular device.
The tray pair supports a varied paper routine
HP documents a 250-sheet input tray and a separate 100-sheet manual-feed tray for the 2420 series. The larger tray can hold routine office paper while the feed path can be used for supported alternate media without replacing the cassette load. The source also notes an optional 500-sheet feeder for the series. That does not mean an expansion is included with the candidate unit; verify all extra hardware separately. Tray capacity reduces some refilling but cannot substitute for a workload recommendation, which HP does not state in the reviewed source.
Ethernet serves a fixed office network
The 2420dn includes an embedded HP Jetdirect server for 10/100Base-TX networking, plus USB 2.0 and a parallel connection. Ethernet makes it a network printer for a wired environment; USB or parallel can fit direct legacy workstation setups. The reviewed configuration does not document built-in Wi-Fi, so a wireless requirement is not met by the standard dn model. A legacy printer may also need a compatible driver and network policy on current computers. Check support on the office’s operating systems before making it part of a shared queue, and do not assume network reachability from the Ethernet label alone.
Do not infer a monthly recommendation from the maximum
HP’s user guide provides technical and electrical specifications, but the reviewed source does not give the 2420dn a recommended monthly page range. The guide contains duty-cycle-related information elsewhere, yet that maximum is not a substitute for a recommended workload band. Keep the monthly profile unknown and judge fit from actual office needs, tray handling and available maintenance information. The 30 ppm Letter rating can help compare printer speeds but says nothing about toner remaining or the condition of a used unit. If numeric volume guidance is essential, favor a product with a documented recommendation.
What else to compare
Compare a wireless mono printer if Wi-Fi is required, or an MFP if scanning, copying or fax should share the same machine.
Before you buy
Does the 2420dn include automatic duplex?
Yes. HP’s guide says the 2420dn configuration includes a duplex-printing accessory for automatic two-sided output.
What does the dn suffix add?
HP documents the 2420dn with automatic duplex and an embedded Jetdirect Ethernet server; other 2420 suffixes may differ.
What monthly volume does HP recommend?
The reviewed exact-model sources do not state a recommended monthly range, so a duty-cycle maximum should not be used as a substitute.
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 U.S. exact LaserJet 2420dn product and part page ↗ — checked October 9, 2026.
- HP U.S. LaserJet 2420dn exact product and Q5959A#ABA identity ↗ — checked October 9, 2026.
- HP 2400-series user guide: 2420dn speed, trays, duplex accessory and embedded Ethernet ↗ — checked October 9, 2026.
The decision
The 2420dn offers legacy mono output, Ethernet and automatic duplex for a wired office. Its missing workload guidance and lack of MFP or Wi-Fi functions narrow its fit.
Is it the right fit?
Check the exact model and today’s offers on Amazon.