Replace your faulty backplane with a GENUINE ORIGINAL OEM Backplane Board.
Type: Fibre Board
Part Number: XJ145
Fits model(s): DELL SERVERS
Compatible part number(s): XJ145 0XJ145 CN-0XJ145 100-561-509 FCNBD062503085
Please look at the picture(s) and check part number to make sure it's compatible with your system.