Hi, im gonna be a new switcher and my first Mac will be the Mac Pro. I was wondering which aftermarket optical drive you put into the second optical drive slot of the Mac Pro. I have heard that you can use any optical drive but you musty unscrew the the front of the covering on the drive since the Mac Pro has that built in to the case. Is that true or do you have to buy a specific drive? I just dont wanna pay $90 for an optical drive through Apple. Thanks for your help.