To complete the 123.hp.com wireless printer setup, tap on the wireless button on the device. Go to the settings and click on the wireless setup wizard. Proceed with the onscreen instructions and the device will show you the available networks. Choose your wireless network and provide the password to get connected. Visit the 123.hp.com website to download the printer driver & software for the device Respective to the printer model. Make sure the printer is connected to the computer while downloading the drivers. Once the setup file is downloaded, run it and follow the on-screen steps to complete the task. You can contact the HP support team for help.