Seagate Barracuda 7200.12 ST3750528AS PCB Only For Data Recovery. 100574451 Rev A Firmware HP34. Does not include the rest of the drive. This PCB was taken from a working drive that was retired due to bad sectors. Please view the photos (including the photos of the actual drive cover that this PCB was taken from) to ensure it's a match for yours. While the PCB is working, you need to know what you're doing to be able to use it to repair your drive, so this is sold strictly as-is with no returns.