I also just purchased a 7610 and now find that I need a duplexer. I phoned HP sales, and they said it is not made by HP and is not available from HP. You recently posted that the following website has the duplexer for sale, and Google also comes up with the same site, http://h30094.www3.hp.com/product/sku/10469626/mfg_partno/C7G18A. My question -- is this website still in effect, is it possible to purchase the duplexer at this time, and is it available (note on site for p/n C7G18A, Call for Availability). Thank you.