I have an old one. No clue how many g’s at this point. Too lazy to look. It play PS1 games. That would make it backward compatible right? But I’m reading two 3 different stories on this. 1. If it’s backwards compatible, it will play PS2 game with this system add on. 2. if it doesn’t have 4 USB slots then it won’t play them. Mine has only 2. 3. Either way, it only play FFXI and SoCom. What’s the deal?If I try to install this to my PS3 will I be able to play my TombRaiders made for PS2? I can play my TombRaider 4 on it now, since I bought it.