Our take
The OKI Data B430dn is a monochrome print-only printer for a wired office that wants automatic duplex. The manufacturer-authored U.S. B400 Series sheet maps it to black 120 V part 91643003 and specifies up to 30 ppm, standard duplex, USB, parallel and Ethernet, with 300 sheets of standard input. Those are concrete advantages for a shared cable-connected workflow, but the document dates from 2009 and does not establish current driver, repair, or consumable availability. Wireless and recommended monthly volume remain unconfirmed rather than assumed.
A wired office needing monochrome output and automatic duplex, after confirming legacy-driver and supply support for the actual unit..
Avoid it if built-in Wi-Fi, scanning or fax, a current driver guarantee, or a documented monthly recommendation is essential; confirm legacy support before buying.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The manufacturer sheet maps B430dn to a black 120 V U.S. part, 91643003.
- Standard duplex and up to 30 ppm are documented for this exact variant.
- USB, parallel, Ethernet, and a 300-sheet standard input are listed.
What to weigh up
- The reviewed sheet does not establish built-in wireless or a recommended monthly page range.
- It is print-only and cannot scan, copy, or fax.
- The source is an older specification and does not prove today's support or the condition of a used unit.
The key details
| Model covered | B430dn |
|---|---|
| Main functions | Print only |
| Print output | Monochrome; up to 30 ppm |
| Two-sided printing | Automatic duplex |
Performance figures are manufacturer claims. Source checked October 8, 2026. Regional models and included accessories can differ.
What the features mean for you
A wired printer with a confirmed U.S. part
The OKI Data Americas specification sheet names the B430dn and maps it to black 120 V part 91643003. That mapping matters for an older machine because a model-family name by itself does not show that a particular regional part is suitable for a U.S. setup. The document describes a monochrome laser print-only unit. It can fit a department that already has scanning and copying elsewhere, but it cannot replace an MFP when a paper workflow includes capture or fax. Check the rating label and exact part before treating a listing as this configuration.
Automatic duplex reduces page handling
The sheet lists standard duplex, so the B430dn can turn pages for two-sided print jobs without asking a person to reload the stack. That supports recurring reports or internal documents better than a model limited to manual page turning. OKI rates the printer at up to 30 ppm; the figure is a maximum specification, not a prediction for every document or workstation. For an office, duplex and paper capacity can affect routine convenience more than the speed headline alone. Confirm that the duplex unit operates on the actual used machine before relying on it.
A useful set of wired interfaces
OKI lists USB, parallel, and Ethernet for the exact B430dn. Ethernet makes a networked location possible when the office has a wired connection, while USB supports a local computer and parallel can matter for older host equipment. The source does not list built-in wireless, so Wi-Fi remains unknown. Do not infer it from a seller's generic phrase such as network ready. Plan the cable and driver path around the interface the device actually exposes, and check the exact U.S. version rather than assuming every B430-series printer has the same ports.
Paper capacity and monthly fit are different facts
The manufacturer sheet states 300 sheets of standard input, which gives the B430dn more paper room than a very small personal printer but is still a finite tray arrangement. It does not state a recommended monthly print volume in the reviewed source. A paper tray count is about how often users replenish stock; it does not establish how many pages the printer is intended to produce over a month. Keep the workload range null and estimate office demand separately until an exact OKI recommendation is found. The maximum duty cycle must not be substituted for that missing value.
Treat the old source as historical evidence
The B400 specification sheet is manufacturer-authored and resolves core hardware facts, but its age means it cannot guarantee modern operating-system support or current parts and toner availability. Before choosing a used printer, ask the seller to show the model label, report the included toner and maintenance condition, and state the return terms. Verify an available driver for the computers that will print to it. This guide has not tested a unit or checked live offers. Those checks belong to the specific purchase and should not be replaced with assumptions from the specification page.
Choose it only when wired duplex is enough
The Lexmark MS811n in this batch is a much faster monochrome network printer with a 5,000–75,000-page recommendation, but it lacks built-in automatic duplex. The B430dn has documented duplex and a smaller 30 ppm rating, while its recommended monthly range is not known. If a modest wired routine needs two-sided output, the OKI's confirmed paper feature may be more useful; for a large queue, compare throughput and workload guidance from exact model sources. The decision rests on the actual mix of duplex jobs, page volume, cables, and support, not on age alone.
What else to compare
The Lexmark MS811n offers a far higher documented speed and recommended range but lacks built-in duplex; choose by workload and paper-handling priority.
Before you buy
Does the B430dn have automatic duplex?
Yes. The OKI U.S. B400 specification sheet lists standard duplex for the exact B430dn configuration.
Is B430dn part 91643003 U.S. suitable?
The manufacturer-authored sheet maps the B430dn to black 120 V part 91643003. Check that the offered unit carries this part number.
Does the sheet give a recommended monthly volume?
No recommended monthly range is established in the reviewed document. The 300-sheet input and 30 ppm rating do not replace that missing guidance.
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.
- OKI Data Americas B400 Series U.S. specification sheet ↗ — checked October 8, 2026.
- OKI Data Americas B430dn part, speed, duplex, ports and input capacity ↗ — checked October 8, 2026.
The decision
The B430dn is a verified wired duplex option when its U.S. part and legacy support path suit the buyer. Wi-Fi and monthly volume remain unknown.
Is it the right fit?
Check the exact model and today’s offers on Amazon.