Plenty of new laptops and desktop computers come with USB-C ports. USB-C hard drives are going to become more common in the future. Take the Blackbox Pro Hard Drive from Glyph Technologies: it is a rugged USB-C HDD that offers up to 220 MB/s transfer rate.
It has a steel and aluminum enclosure and rotational speed of 7200 RPM. The Blackbox Pro is backwards compatible and supports Time Machine.