Bought a new SATA III 3T H/D. Tower has the DVD/ROM hooked to 1 of two SATA Power on MOBO(the other of course hooked to my OLD Drive) I will replace. HOW do I swing it to do a Clone or Xfer of everything from OLD to NEW Drive? Can I just DISconnect DVD/ROM Power/Data and hook up NEW H/D to empty Slot, and "do my thing"?? Tried getting the Power Connector off of DVD to MOBO, but won't budge.