Our take
The Lexmark MS812dn is a high-speed monochrome printer for an office queue with sustained work. Lexmark identifies part 40G0310, rates Letter printing up to 70 pages per minute and includes integrated duplex. Standard input totals 650 sheets from a 550-sheet tray and 100-sheet multipurpose feeder. Gigabit Ethernet and USB are standard, while wireless requires an optional print server. Lexmark's 5,000–100,000 monthly recommendation is the key workload guide; its 350,000-page duty-cycle ceiling is not the routine target. The model is discontinued, so compare the printer's age and driver fit as well as its specification. It is a poor match for casual home use but can suit a wired shared queue when a specific unit is sound.
A busy wired mono queue that needs fast output, standard duplex and a stated workgroup volume band without relying on optional paper trays..
Skip it for color, built-in Wi-Fi, a small occasional workload, a compact desk setup, or a purchase where current support and parts availability must be guaranteed.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Lexmark rates Letter output up to 70 ppm and includes integrated duplex on the exact 40G0310 model.
- A 550-sheet tray and 100-sheet multipurpose feeder provide 650 sheets as standard.
- Standard Gigabit Ethernet and USB support a wired office queue or direct workstation connection.
What to weigh up
- Lexmark lists the MS812dn as discontinued, so buyers need to verify condition and software compatibility.
- Wireless networking uses optional hardware and is not a built-in feature of the standard configuration.
- A 5,000-page lower recommended monthly volume may not suit very light or occasional personal printing.
Specifications and exact model details
The key details
| Model covered | MS812dn (40G0310) |
|---|---|
| Main functions | Monochrome laser print-only |
| Print output | Up to 70 ppm Letter; 650-sheet standard input |
| Two-sided printing | Integrated automatic duplex |
Performance figures are manufacturer claims. Source checked October 17, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Compare speed with recurring job volume
Lexmark rates the MS812dn at up to 70 pages per minute on Letter paper and calls it a large-workgroup printer. That rated pace can matter when several people send multi-page mono jobs to the same queue, although an individual job may take longer depending on its content and start state. The model's black-only output means color documents need a separate device. Do not treat the manufacturer's maximum rating as a promise for a particular used machine; inspect print quality, error history and maintenance records before relying on a fast specification. ([Lexmark MS812dn specifications](https://www.lexmark.com/en_us/printers/printer/7664/Lexmark-MS812dn)).
Integrated duplex is standard on this suffix
The MS812dn includes integrated automatic duplex. That matters for teams that regularly produce two-sided reports and want the printer to return each sheet without someone manually turning the stack. Lexmark's suffix guide explains that d means duplex and its exact 40G0310 product page lists duplex as integrated, so the feature is part of the named configuration. The specification does not promise that a used duplex path is currently operating correctly; confirm the accessory is present and test a two-sided job on the individual printer. ([Lexmark MS812dn specifications](https://www.lexmark.com/en_us/printers/printer/7664/Lexmark-MS812dn)).
Standard capacity is 650 sheets
Lexmark lists a 550-sheet input tray and a 100-sheet multipurpose feeder as standard. Together they provide 650 sheets, with optional drawers available for larger capacity. A team can keep the main stock in the cassette and use the multipurpose path for a second size or stock; optional trays should be counted only when verified on the delivered machine. The two standard sources reduce reloading compared with a small desktop feed, but they do not establish how a used machine has been maintained or whether its feed rollers are in good condition. ([Lexmark MS812dn specifications](https://www.lexmark.com/en_us/printers/printer/7664/Lexmark-MS812dn)).
Use Ethernet as the standard shared connection
The product page lists Gigabit Ethernet and USB among the standard ports. Ethernet gives a wired office a direct shared-network connection; USB supports a local workstation. Lexmark lists a wireless print server as an optional network port, so the standard MS812dn is not ready for built-in Wi-Fi without extra hardware. The model is marked discontinued, which makes a driver and security review part of the buying decision for any managed network. Do not assume a cable or an optional wireless component comes with a used listing. ([Lexmark MS812dn specifications](https://www.lexmark.com/en_us/printers/printer/7664/Lexmark-MS812dn)).
Plan against the recommendation, not the duty ceiling
Lexmark recommends 5,000–100,000 pages per month and separately lists a duty-cycle ceiling up to 350,000 pages. The recommendation is intended to help match average planned monthly use to the printer; the higher figure is a maximum comparison, not a safe everyday target. An occasional home printer may be underused relative to the lower end, while a larger shared queue can compare its actual volume with the stated range. Since the product is discontinued, a model's recommended band cannot replace a check of the unit's age, print engine and prior service. ([Lexmark MS812dn specifications](https://www.lexmark.com/en_us/printers/printer/7664/Lexmark-MS812dn)).
Compare for your needs
For lighter use, choose a printer with a lower recommended monthly range. For wireless placement, select a model with built-in Wi-Fi documented as standard.
Find the undefined that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
How fast is the MS812dn rated to print?
Lexmark lists up to 70 pages per minute for black Letter output; job complexity and printer condition affect actual elapsed time.
Does the 40G0310 include duplex?
Yes. Lexmark identifies integrated duplex as standard for the MS812dn configuration with part number 40G0310.
Can it connect to an office network?
Gigabit Ethernet is standard, along with USB; wireless networking requires an optional Lexmark print server.
What monthly workload does Lexmark recommend?
Lexmark publishes a recommended range of 5,000–100,000 pages per month and a separate, much higher duty-cycle ceiling.
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 and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Lexmark U.S. MS812dn specifications and part mapping ↗ — checked October 17, 2026.
- Lexmark U.S. part 40G0310, speed, input, duplex, standard ports, optional wireless and monthly recommendation ↗ — checked October 17, 2026.
The decision
The MS812dn is a strong wired mono candidate when the 70-ppm rating and workgroup volume guidance fit the queue and the unit's age is acceptable.
Is it the right fit?
Check the exact model and today’s offers on Amazon.