Alex didn't just run an installer. They downloaded the .zip or .exe file, extracted the contents to a folder on the desktop, and used the "Add a printer" tool in the Windows Control Panel.
To download drivers for your HP DesignJet 500 Go to product viewer dialog for this item. draivera dlia hp designjet 500 skachat
What (e.g., Windows 10, Windows 11, or macOS) are you currently using so I can give you the exact steps for that version? Alex didn't just run an installer
Once upon a time, in a small architecture firm, there sat a dusty HP DesignJet 500 in a small architecture firm