If the internal drive specs match and they generally do for these drives you have more of a chance frying something by introducing a second 115 volts into the mix with an external drive. I take it your offer to buy me a new one means D* would still charge you for the cost of a machine.How did I know you would have this come back. If plugging in an eSATA data cable fries the machine, I will BUY you another one. You have to prove it though. Plugging a data cable in is much different then opening a case, removing power lines, removing a drive, plugging in an unsupported driven internally, and booting this off the INTERNAL power source. That is the danger, not the booting into a different data storage.