Dell E515DN Laser Printer - Monochrome - 600 x 600 dpi Print - Plain Paper Print - Desktop E515DN - Multifunction - Laser - print, copy, scan,fax - Simplex (600 x 600 dpi): Up to 27 ppm (letter) and 26 ppm (A4);Duplex (600 x 600 dpi) :Up to 15 ppm (letter) and 13 ppm (A4) - 2400 dpi x 600 dpi - Ethernet 10/100Base-TX;USB 2.0