Because these drivers are not "plug-and-play," you must install them manually using the "Have Disk" Download and Extract: Download the Windows 8 64-bit driver from the HP Official Driver Page . If it's a file, run it to extract the files to a folder on your drive, but do not run the installer itself. Add Printer Manually: Devices and Printers in your Control Panel. Add a printer , then select "The printer that I want isn't listed"
The JetDirect card uses old protocols (port 9100). For modern networks, isolate the plotter on a VLAN or use a dedicated print server with firewall rules. hp designjet 500 plus plotter driver for windows 10 64 bit