Nope. The Model 3 with CCS port cannot take DC on the upper pins. If it could, it wouldn't need an adapter at all to use the existing Superchargers. Besides, the CCS adapter for S/X is the wrong way around. It takes a CCS-2 cable and allows the DC to flow into the Tesla Type-2 like charge port. A Model 3 with CCS port would need to take a Type-2 like Supercharger cable and put the DC current into the lower pins on the CCS charge port. That gender adapter doesn't exist.