IBM Voltage Regulator Module (VRM) 1U/75A (all models except 0Rx, 0Sx, 0Tx, 1Rx, 1Sx, 1Tx, 2Rx, 3Rx, 3Sx, 3Tx, 4Rx, 5Rx, 5Sx, 5Tx, DRx, DSx) X336