his is perfect replacement Board for Xbox 360 with slim Hitachi-LG 0500 /0502 Drive. It is custom designed PCB which can Fully compatible with 9504, 0225 and 0401 fw revisions . and you don't need to waste your hitachi drive to replace with slim Liteon drive. just replace the Drive Board. And all PCB will shipped as Blank. You need to program your console with correct firmware version and Drive Key !!!