Reverseprinton hp2540 - HP Deskjet 2540 Wireless Color All-in-One Inkjet Printer

This unit prints one side of paper only
to get it to print 2 sides when you go print on a document thee will be a section that says print all pages , print this page ,print elected pages
in the print selected section type in the pages you want to print ie 1,3,5,7,9 or even pages 2,4,6,8
or there may be a section that opens up with print all pages, print odd pages ,print even pages
to print both sides select odd pages and when they have printed take the whole of the pages and reverse them in the printer feed and then select even pages and print
the operators manual will explain how to do ti.