Lexmark MS531dw mono laser printer, A4, 44 ipm, duplex, Wi-Fi, LAN

The 44 ipm rating is measured to ISO/IEC 24734, which uses typical office documents rather than a blank page with a single line of text. That makes the figure a good guide to real-world pace: a ten-page contract lands in the tray in under half a minute. A fast printer pays off most when several people send jobs at once and nobody wants to wait in the queue.

The printer supports duplex printing, so long documents use half the sheets and paper consumption drops. The standard input tray holds 250 sheets, so paper does not need topping up every day, and the output tray takes 150 sheets. The maximum format is A4, covering invoices, contracts, reports and letters.

A maximum resolution of 1200 × 1200 dpi means small type, fine lines and barcodes print crisply and legibly. Besides plain paper, the printer handles label stock, card stock and envelopes. For speciality media the manufacturer points to the Lexmark Paper and Specialty Media Guide, which lists suitable weights and types.

The MS531dw joins the office network by Ethernet cable or wirelessly over Wi-Fi. As a network printer it is available to every computer on the same network and is not tied to a single desk. Wi-Fi also lets you place it where a network cable does not reach. The printer weighs 15.3 kg, so it needs a sturdy surface.

This is a pure printer: there is no scanner, copier or fax on this model. That is a deliberate choice for offices where scanning is handled by a separate device or not needed at all, and where the printer is expected to deliver fast, clean black-and-white output and nothing else. Fewer functions also mean simpler setup and maintenance.

Offices and teams that print plenty of black-and-white documents every day: contracts, invoices, reports and dispatch notes. It also suits warehouses and logistics teams that print labels and envelopes, and organisations where several people share one network printer and time spent waiting in the queue is costly.