I just bought this http://www.newegg.com/Product/Product.asp?Item=N82E16822148065 hard drive and put it in the powermac. I conected the power cable and data cable. Removing the data cable ? (the longer one) from the original hard drive and putting it in the new one, because thats the only way it would fit since they're on the same chord. But it doesn't show up. Any Ideas!??