I am totally confused. Are you talking about a desktop computer or your Deskjet 3510 printer ? Your new modem/router may only broadcast using 5.0GHz. You need to allow your new router to broadcast both (dual) bands which are 2.4GHz and 5.0GHz.
Hope this helps.
BH *** **Click the KUDOS thumb up on the left to say 'Thanks'** Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.
I tried setting to dual band, was unsuccessful (no "settings" button AT&T), called AT&T. They checked and said I have 2.0Ghz only. Said, after researching it, that this doesn't present a problem in the hook up of my Mac and Dell to one printer.
This topic has been archived. Information and links in this thread may no longer be available or relevant. If you have a question create a new topic by clicking here and select the appropriate board.