Since you likely have the hardware but are missing the software, here are the best steps to get it working on a modern or legacy system:
Option A: If you are running Windows XP or older: You will need to look for archived driver packs. The most reliable archive for Pinnacle hardware is typically found on VideoHelp.com or the Internet Archive. pinnacle lahvdrx pci 1 driver 2 5 112 link
Option B: If you are trying to use this on Windows 10 or 11: Unfortunately, this driver will not work. The Pinnacle PCTV PCI cards (based on the Brooktree BT878 chipset) do not have supported drivers for modern Windows versions. Since you likely have the hardware but are
Safe sources:
Most searches like this come from users trying to make an old Pinnacle PCI capture card work on Windows 10/11. Option B: If you are trying to use