The network-ready Lexmark MX310dn multi-function printer with two-sided printing includes 256MB standard printer memory and has print, copy and scan speeds as fast as 35ppm. Improve your print, scan and copy speeds by taking advantage of 256MB of memory and an 800MHz dual-core processor. With up to true 1200x1200 dpi resolution, images and graphics stay crisp. Lexmark 's Unison Toner ensures consistent quality too.