The "shape" of the port determines whether it will physically fit your computer or device.
: The modern, reversible, oval-shaped port common on new laptops and smartphones. It supports faster speeds and higher power delivery.
: You may encounter USB-B (square, for printers) or Micro-USB (trapezoidal, for older mobile devices) when buying cables or adapters. 2. Choose Your Performance Standard
The version number dictates how fast data moves and how much power the port can provide.