OK. I think it might make sense to choose an eSATA drive based on what model drive is installed stock, OE. IOW, if they use a Barracude 500, would it not make sense then to choose the Barracuda 1.5 or 2 TB version of that drive, the one in that particular line? Who can stick a pin in that trial balloon? Regardless of the soundness of the theory, just what drives are installed stock?