Model: WD1001FAES Firmware: Please Read Description Capacity: 1TB / 1000GB PCB #: 2060-701640-002 Note about items with "Firmware Transfer" in the title: We need you to mail the damaged board to us first for these items, because the damaged board holds some important and unique data about your hard drive. We'll need to copy this data from the damaged board onto the new board in order to make the new board compatible. What this board is supposed to do for you: If your hard drive has stopped working, chances are you have some important data stored on it. Sometimes the hard drive failure is caused by a circuit board failure. This product is made to be an identical and functional replacement for your circuit board, therefore repairing your hard drive and saving you expensive data recovery charges. Please note that hard drive failures are NOT always caused by circuit board failure, so this board is not guaranteed to fix your hard drive.