Earlier this month, Lexmark announced the availability of new midrange A4 monochrome laser printers and MFPs: the MS and MX 320, 420, 520, and 620 series. There are a dozen models altogether, including the single-function MS321dn, MS421dn, MS521dn, MS621dn, and MS621de and the multifunction MX321adn, MX421ade, MX521de, MX521ade, MX522adhe, MX622ade, and MX622adhe. And that’s not
