[Re-CC'ing the list because I don't think this is secret or private.] Bruce Campbell wrote: I found the support page here: https://support.hp.com/us-en/product/samsung-clx-6260-color-laser-multifunc… It looks like most or all 6260 models do at least *have* duplex print hardware. i.e. it's NOT simply that you're trying to print two-sided on a single-sided printer. I am too lazy to read the full manual. I would try poking around in the menus in case e.g. duplex module is turned off for some stupid reason. Good luck!