How do I connect my HP printer to Mac through “ 123.hp.com/setup ”? To connect Mac computer to wireless HP printer follow the below steps: Firstly ensure that the printer is on. Then connect HP printer with a wireless router (we have mentioned the steps for the same previously) Download your printer’s driver from HP’s website “ 123.hp.com/setup ” for MAC OS. After the driver is downloaded, double click on it to begin installation process. After the installation, continue to the next step of adding on the printer in the MAC Go to the Apple menu and choose “System and Preference”. Now Click on the “ Printer and Scanners ” Option Click the “+” sign present on the left-hand side corner. Next screen will display with your printer model. Select that now and click the add button to finish the 123 HP setup on your MAC .