The USB Type-C (or USB-C) is a fairly recent connector standard, and became available on Galaxy devices with Galaxy S8 and S8+. Its name basically refers to the physical shape of the plug. In this case, it's reversible meaning that you can plug in the USB Type-C cable any way because either way is up. And it doesn't matter which end of the cable you plug in either, since USB Type-C is interchangeable.
USB Type-C is available on Galaxy S9, S9+, Note8, S8, and S8+.
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