The mono office laser printer is still one of HP's core products and the LaserJet P3005x is a fast and versatile member of its latest generation. It comes as standard with duplex capability and two paper trays, each of which can take a full, 500-sheet ream of paper. This means you can set it up with letterheads and follow-on sheets, and still have a multi-purpose tray for special media, such as envelopes.