the majority of RTX 4070 Ti require a 12pin PCIe cable or a 2x/3x 8pin > 12pin adapter.
the MWE 750 Gold offers 5x PCIe 8pin connections.
but, the CM MWE series is a mid-low tiered series.
i would not recommend them for any sort of higher level system(gaming, etc).
you would be better off unloading this unit and getting a higher tier unit capable of maintaining a more reliable stable connection for longer periods.