I bought a new 2TB HDD(http://www.newegg.com/Product/Product.aspx?Item=N82E168...) to go with my new PC I built. Basically what I want to do is hook this HDD up to my old PC and copy all my files from my old HDDs into this new one. After that it is going straight into my new PC. Do I have to go to the trouble of installing the new HDD into my old PC case just to copy files? Or can I connect the SATA data and SATA power cables to it and kind of just sit it on top of the case or on top of the PSU/somewhere inside the case, copy the files, unplug the cables and move it into my new PC? Would that be dangerous?