HP LaserJet MFP M438n. Print, Copy, Scan Black (A4, normal): Up to 22 ppm ; Black (A3, normal): Up to 12 ppm,Monthly duty cycle: Up to 50,000 pages per month (A4), Recommended monthly page volume: 2,000 to 5,000. 350 sheets (Standard), 600 sheets (maximum) with the optional 250-sheet tray as service part only. Output capacity: 250 sheets, Built-in Ethernet networking. Memory 128MB. Supplies: W1335A HP 335A, W1335X HP 335X