I inherited an SCO 5.x UNIX machine.

It has a NIC card, but is not listed in the hardware config.

Model is D5013-60001. That model is not listed in types to install.

When connected to Network, the card shows green lights, but I'm not sure
what that means. Maybe that the card is working hardware wise, but has not
been installed?

Any ideas, or would it be best to just buy a new card and put it into
machine.

If someone can help, I can furnish any additional information.

Thanks.