ISD is the maker of "ChipCorder" IC's which record digital sounds. The early ones allowed 30 seconds or 1 minute of sound capture. I suspect its a very early sound card back to the 90's , may not be for locomotives - I have an ISD board that has a Steam Organ ( Carousel) sound on it !
I think that is an ISD soundcard, you should try posting on other section of the forum and see if someone can help you. Play Among Us online today and start gathering your team mates to start capturing the traitor in the game, beware on your every move and don't trust anyone. Just like among us, this blockman go game is also free to play so you can enjoy the game without paying any amount