HP LaserJet 4250 Printer, LaserJet. Maximum resolution: 1200 x 1200 DPI, Network ready: Optional, Maximum duty cycle: 200000 pages per month. Print speed (black, normal quality, A4/US Letter): 43 ppm, Print speed (black, draft quality, A4/US Letter): 43, 45 ppm, Warm-up time: 60 s. Internal memory: 48 MB, Maximum internal memory: 512 MB. Processor clock speed: 460 MHz, Built-in processor: 20KC MIPS. Standard input capacity: 600 sheets, Maximum input capacity: 3100 sheets