izzyfast :
boosted1g :
With the right USB 3.0 to USB C adapter it should work, although it will be hard to find an adapter for your purpose. The much much more common situation is a usb 3.0 device needing to plug into a usb C port.
It is going to basically come down to if the chip on the external SSD supports it or not. If it is a mainstream brand then odds are it will, if it is a cheap chinese brand then its 50-50 chance.
Nevermind, I'm just really frickin stupid and didn't realize that it supports 3.1/3.0/2.0, sorry for wasting your time.
Lol OK.
For the record. There is no such thing as USB C 3.0.
There is USB 3.0 and USB 3.1. USB 3.1 comes in Type A (Same physical design as USB 3.0) and Type C ports.
Then to make things even more confusing there is thunderbolt 3 that uses the same connector as USB C.
At which point you start getting into all thumbs are fingers but not all fingers are thumbs kind of thing.