Yes, you can use your MacBook USB-C port to connect to a Nintendo Switch. To do this, you will need an adapter that is compatible with the MacBook USB-C port and the Nintendo Switch. Once you have the adapter, simply connect one end to the MacBook USB-C port and the other end to the Nintendo Switch. You should then be able to use the USB-C port to power your Nintendo Switch. If you have any further questions, please let us know.