purchased printer 1-26 & with 3 hrs. unable to establish wireless. son computer savy attempted for almost 2 hrs. unsuccessful. called att to verify all numbers. called HP they said had to be defective cd or att. att technician came to house & worked for almost 2 hrs. unable to enter the necessary routing IP etc. into the printer. got new cd from dealer. still no success. 1-30 dealer exchanged printer & i purchased their dealer essentials support package. told they would be able to do setup connected via internet. almost 2 hrs later he also gave up. he said the signal is there & strong. No one can find the way to enter the necessary information into the printer. i now have second printer packed & ready to return unless someone thinks they really have an answer. while printer works great with USB, i purchased to get wireless.