I5-1145G7 DP/N: 0M51J7. Genuine Dell Latitude 5420 Motherboard. IF THE DELL PART NUMBERS ARE DIFFERENT, IT IS LIKELY THIS MOTHERBOARD WILL NOT WORK FOR YOU. YOU WILL NEED TO VERIFY THE MOTHERBOARD PART NUMBER - NOT THE LAPTOP MODEL NUMBER (LAPTOP MODELS CAN TAKE A VARIETY OF MOTHERBOARD PART NUMBERS).
