Samsung ML-2551N. Maximum resolution: 1200 x 1200 DPI, Print technology: Laser, Maximum duty cycle: 150000 pages per month. Print speed (black, normal quality, A4/US Letter): 24 ppm, Time to first page (black, normal): 12 s. Internal memory: 32 MB, Maximum internal memory: 144 MB. Processor clock speed: 266 MHz, Built-in processor: Samsung. Maximum input capacity: 500 sheets