Whats the best way to clean and maintain the USB-C port?

USB type-C datasheet usb c slot Then, Charging over USB type C is done using the USB type C Power Delivery specification According to that specification, the maximum power usb a slot If you have any internal headers you can get a rare pcie slot panel that will plug into your existing motherboard and give you a USB C slot

usb slot extender This will prevent moisture such as sweat from entering Image indicating how to close the cover of the USB slot As you can see on the image