You will need a USB cable and software setup files for this printer. To install HP Officejet 4620 driver without CD, go through these steps.
After turning in your printer and computer, unplug the USB cable of the printing device.
After downloading the setup file, run it and adhere to the guidelines for its installation.
When the installer Wizard prompts, link the USB cable of the printer to your device.
Adhere to the Wizard’s guidelines for finishing the installation.