Tip:Many computers identify USB 3.0 with blue ports, but newer PC’s typically don’t. Mac computers have never used blue ports. When initially released, USB 3 ports were used alongside USB 2 ports. Differentiating them by color makes it easy to identify to avoid connecting to the wrong port. USB 2.0 ports were commonly replaced with 3.0 ports, so their color differentiation became less necessary. The introduction of USB-C has also made 2.0 ports less common, and thus the color differentiation less critical.
USB 3.0 ports can be identified by checking the Device Manager on a PC. You can also determine the physical ports on your computer, which will either be blue or marked with a “SS” (SuperSpeed) logo.
On a Mac, USB ports can be identified in the System Information menu. They’re not blue or marked like on a PC.