The safest and most reliable way to download drivers is directly from the manufacturer. However, HP frequently updates its support portal.
Once installed, go to . Right-click the HP A799 icon and select Printing Preferences to adjust: Paper width (80mm is standard). Cutter settings (Full cut or Partial cut). Print density and speed. 💡 Troubleshooting Common Connection Issues hp a799 thermal printer driver download link
Download the (usually a .exe or .inf file). How to Download and Install the HP A799