The HP LaserJet Pro 400 series features reliable, high-speed business printers known for sharp text, mobile printing, and robust duty cycles. Specifications vary depending on whether the unit is a monochrome (M401/M425) or color (M451) model.
Monochrome Printers (M401 / M425 Series)
These black-and-white workhorses are designed to handle high-volume office tasks.
Print Speed: Up to 33 to 35 pages per minute (ppm).
Resolution: Up to 1200 × 1200 dpi.
Processor & Memory: 800 MHz processor with 128MB to 256MB of RAM.
uty Cycle: Up to 50,000 pages per month.Paper Capacity: 250-sheet primary tray plus a 50-sheet multipurpose tray (expandable to 800 sheets on select models).Duplexing: Automatic double-sided printing comes standard on the dn and dw models.