HP Color LaserJet 5550 Printer, LaserJet. Maximum resolution: 600 x 600 DPI, Maximum duty cycle: 120000 pages per month, Print technology: Laser. Print speed (black, normal quality, A4/US Letter): 28 ppm, Print speed (black, draft quality, A4/US Letter): 28 ppm, Print speed (colour, draft quality, A4/US Letter): 28 ppm. Internal memory: 160 MB, Maximum internal memory: 544 MB. Processor clock speed: 533 MHz, Built-in processor: MIPS RISC. Standard input capacity: 600 sheets, Maximum input capacity: 2100 sheets