HP Laser AIO 3390Specifications : HP LaserJet 3390 All-in-One Printer - Print: Up to 22 ppm Letter 21 ppm A4 black; Up to 1200 x 1200 dpi; Up to 10,000 pages per month duty cycle; Scan: Up to 19,200 dpi enhanced & up to 1200 dpi optical; Copy: Enlargereduce 25 to 400%; Fax: 3 seconds per page, up to 250, up to 120 (119 group dials); Hi-Speed USB 2.0 port, 10100 Base-T wired Ethernet network port, RJ-11 fax port, RJ-11 line-out telephone port