Many Terratec cards shipped with a on the bracket or the chip itself . The best serial number is often printed directly on the hardware.
For lost drivers, check archive.org/details/terratec-drivers – and include your S/N’s middle and suffix digits in the search. terratec home cinema serial number best
Sometimes the code is printed on the bottom or back of the physical TV tuner USB stick or PCI card. Many Terratec cards shipped with a on the