HP LaserJet Pro M521dn (A8P79A) Duplex 1200 x 1200 dpi USB Monochrome Laser All-in-One Printer with HP 55A (CE255A) Black Original Toner Output Capacity, std.: 250-sheet output bin, 100-sheet rear output bin Black Print Quality: 1200 x 1200 dpi Part Number: A8P79A-STAPLES Functions: 4-in-1: Print, Copy, Scan & Fax Display: 3.5 (8.89 cm) touchscreen, LCD (color graphics) Time To First Page (seconds): 8 sec. Print Languages, std.: HP PCL 6 Duplex printing: Automatic