2. If you can using Internet explore, you can download and save the installation file CheckPrintingSetup.msi to your USB disk direclty.
If you cannot save it directly to your USB, you can download it to your local machine first, then copy it from the downloads folder to the USB disk.
3. Insert USB disk into your offline machine and double click the .msi to start the installation. (Note: If your machine has higher security settings, you can copy the .msi file to a folder on your machine and start installation from your local folder).