I just brought one this lunch time, probably not the best person to ask though as I don't know that much about it all! I brought a battered old amiga 1200 off ebay a while ago and have been rebuying all the games of my youth. Plus bringing a little shine back to the thing.
Thought I would give whdload a spin and got a hard drive full of games and this expansion card seems the most reasonable in terms of pricing to get that working.
But as I said, apart from some A500 gaming in the my late teens my amiga knowledge is puddle deep!
Welcome on board! don't worry any probs or info you need is on here, or just ask.
