Additional 500 sheet capacity.  Enhance work group productivity with this simple-to-install and easy-to-use paper input tray.  Up to three optional trays can be added to the HP LaserJet 4345 mfp for a maximum capacity of 2,100 sheets, reducing the number of trips you have to make to the printer to reload paper.  The tray supports standard sizes from 5.8 x 8.3 x 8.5 x 14 (148 x 210 to 216 x 356 mm) and paper weights ranging from 16 to 32 pounds (60 to 120 g/m2).  Unique media sensors automatically detect the paper size for each try,  ensuring that print jobs print from the correct tray.  This tray also has adjustable paper guides and a paper-level indicator that is viewable from the outside of the tray.