HP LaserJet Pro 400 Printer M401dn, LaserJet. Maximum resolution: 1200 x 1200 DPI, Print technology: Laser, Maximum duty cycle: 50000 pages per month. Print speed (black, normal quality, A4/US Letter): 33 ppm, Time to first page (black, normal): 8 s. Internal memory: 256 MB, Maximum internal memory: 256 MB. Processor clock speed: 800 MHz. Standard input capacity: 50 sheets, Maximum input capacity: 250 sheets