Its nice that the USB people decided to make a reversible version for USB type C. The non-reversible but externally symmetrical USB type A is one of the most annoying things about human computer technology ever devised.
Lets clear up the shape and speed for USB. the numbers refer to the speed. thats USB 1, 2 and 3. The letters refer to the shape. thats A B and C.
A is the bad one. USB Aaaaaarrrrgggghhhh!!!!!!!
USB A is limited to 5V. But the new USB C can do 20V up to 5A. thats up to 100W. Well, SOME OF THEM CAN. Nothing is simple in USB land. As soon as you start looking at the details, things go downhill fast.
You would expect USB 3 to always use the fastest speed, USB 3. But not always. Some devices use USB C with USB 2 speed. grrrr! Watch out for that one!!!
Great, USB has become reversible, which has taken forever. But there are many pitfalls for anyone not reading the fine print. Well done USB people, keeping the standards messy and confusing.