While I can’t browse the specific article you saw, I can give you the that such a write-up would likely cover — because the HP DesignJet 500 is a legacy printer (circa 2001) with no official Windows 11 driver from HP.
On the HP site , manually change your operating system to Windows 8 (64-bit) or Vista (64-bit) . plotter hp designjet 500 driver windows 11 free