Specifications for B3340dw with owner checks for this product design. Use the matching manual for control sequences and replacement parts.
Specifications & model details
B3340dw: model-specific checks
Use both product and source names
Lexmark B3340dw is listed under ENERGY STAR partner Lexmark International, Inc.. Search support by the retail brand and full product code. The partner name helps distinguish the certification record from a similarly named product; it is not a declaration of the current warranty provider.
Lexmark B3340dw is recorded as Electro-photographic (EP). Separate a device-generated test from a computer job, and match the consumable system before following a replacement or print-quality procedure.
Lexmark B3340dw lists automatic duplex output as Yes. Compare the driver’s two-sided option, paper size and media type with the supported paper path. A printer’s output duplex entry does not establish two-sided scanning.
Install exact-model drivers and apps, and treat printer firmware as a separate update path.
Owner guide: Software, drivers & firmware
Category & symptom guidance
Software, drivers & firmware
3 minute read · Shared guidance for printers & imaging
Choose software for the exact printer and operating system
Download drivers and utilities from the manufacturer’s page for the complete model code and your operating-system version. A basic class driver may print but omit duplex, paper-source, color, maintenance, scanning, or fax features. For multifunction devices, install scan software separately if the manufacturer lists it as a separate package.
Avoid third-party driver sites and packages for a near-model. Keep the package name, version, and download date. In a managed computer, ask IT before installing software or changing security permissions.
Separate printer firmware from computer drivers
Firmware runs inside the printer; a driver tells the computer how to format and send jobs. An app may control cloud printing or scanning without updating either one. Update the component related to the symptom. A missing paper option points toward the driver or job settings; a printer control-panel fault may require firmware or service.
Use only the manufacturer’s firmware for the exact model and region. Keep the printer powered and connected during an update as directed. Do not interrupt a firmware write or use a file found for a similar model.
Check app and operating-system support
Confirm the manufacturer app supports the current operating system and the printer model. Some mobile printing features depend on the platform’s built-in service, while scanning or supply monitoring may require the manufacturer app. If one function is missing, verify the supported app version and permissions rather than reinstalling every component.
After a major operating-system update, check the manufacturer’s support page for driver compatibility. A printer may continue to print through a generic driver while scanning or advanced features require a newer package.
Install and verify one package at a time
If reinstalling, remove only the affected printer queue or package using the operating system’s normal settings, then install the official software. Restart the computer only if the installer requests it. Add one connection type and confirm the printer name before creating a second queue. Test printing and scanning separately.
Record the driver and firmware versions if the problem continues. Provide those versions, model, OS build, network or USB path, and exact message to support. Repeating installations without noting versions makes it difficult to identify what changed.
Remove duplicate queues carefully
Before reinstalling, identify each queue by connection type, such as USB, network hostname, or IP address. Two entries with the same model name can point to different devices or use different drivers. Print a test page from the queue you intend to keep, then remove only the obsolete entry. In managed environments, do not delete a shared print-server queue; ask IT to repair it. This prevents a working path from being lost during cleanup.
After installing software, confirm the printer appears once in the device list and select it by its current model and connection. If a scan application cannot find the device, check local network permissions and whether the scanner driver was included.
General background sources
These sources support the shared guide. Exact model specifications and matched family procedures have their own sources above.