PRINT RESOLUTION: Black (best): Up to 1200 x 1200 dpi
; Technology: 300 dpi, 600 dpi
HP FastRes 1200, HP ProRes 1200

SCAN SPEED: Simplex/Duplex
Up to 29 ppm/46 ipm (b&w)
Up to 20 ppm/35 ipm (color)

COPY / PRINT SPEED : Up to 38 ppm (default)
Up to 40 ppm (HP High Speed Mode)

Standard: Up to 150 sheets: OUTPUT CAPACITY

ACCESSORIES (PAPER HANDLING): HP LaserJet 550 Sheet Feeder Tray

MEMORY: 2 GB

FIRST PAGE OUTPUT SPEED: Black (A4, ready): As fast as 6.5 sec
Black (A4, sleep): As fast as 8.8 sec

INPUT CAPACITY: Maximum: Up to 900 sheets

PROCESSOR SPEED: 800 MHz

STORAGE/HDD: Not Available

CONTROL PANEL: 4.3” Color Capacitive Touch Control Panel

RECOMMENDED MONTHLY PRINT VOLUME: Up to 1,500 to 7,500 pages

RECOMMENDED MONTHLY SCAN VOLUME: 900 to 4,800 pages

MODEL: HP LaserJet Managed MFP E42540f

FUNCTIONS: Print, copy, scan & fax