I use a Buddha Flash Phoenix in my A2000 I have no problems whatsoever. The card is fairly fast at about 2.5mb a second. I use an old 2.1 gig hard drive I had lying around. It does work with 2.04 because that's what I first had in there. I then moved to 3.1 ROMS and my A2000 has OS 3.5 on it. The card worked with 2.1, 3.0, 3.1 and now 3.5 you shouldn't have a problem with the card. Just make certain that you install it correctly. The software that comes with it is IDE-Fix97 and it only works with this card. It was a good purchase.