Hello, I am using OS X El Capitan. My Mac is connected to the internet though wireless connection at home. I set up the printer and it is also connected to the same network. I downloaded the HP Easy Start program from HP. Upon hitting My HP Product Setup, there is a check mark next to power on, installation of supplement cartridges, and the sentence saying that in case wireless connection is not used, use usb or ethernet cable to connect the Mac to the printer. I pressed Continued. After searching for awhile, it says that device cannot be found. I tried to add the printer via system preference->printer and scanner, in the first trial the printer name showed up but after resetting the printer, the printer does not show up anymore. Could you please let me know how to fix the problem?