This HP Color LaserJet Pro 4201dn Printer is a versatile and reliable all-in-one printer that can handle a variety of paper sizes including A5, A4, and A0. With a maximum resolution of 600 x 600 DPI, it produces high-quality color output and can also scan and fax documents. The printer is wireless and has multiple connectivity options including Ethernet (RJ-11 and RJ-45). It comes with 512 MB of memory and has a black print speed of 33 ppm. This unit is a great addition to any office or home setup and can handle all your printing needs.