I though I had done my research before buying the replacement hard drive. My iMac is EMC:2390 and I bought the Seagate Barracuda ST 1000DM010. The heat sensor connector is too big to fit onto the new drive. It is a square 6 pin connector and the pins on the new drive are only 4 flat so I cant plug the temp connector in. Does anyone know why I have this problem? I have rechecked the parts required for my replacement on this site and it states for the EMC 2390 I can use the Seagate ST 1000DM010.