The USB Type-C connector is becoming increasingly popular, yet the traditional USB ports, including USB Type-A and USB Type-B, continue to be widely used and are not expected to phase out anytime soon.
A distinctive characteristic of the original USB-A ports that is absent in the newer USB-C ports is the colored plastic insert. Its primary function is to support the metal contacts and ensure proper alignment. Additionally, it plays a significant role, especially in USB Type-A and Type-B ports; the color assists in identifying the speed class, power capabilities, or other specific functions of the USB port. The most frequently seen colors on a USB port’s plastic insert are black and blue, but there are also some USB ports utilizing teal, white, purple, red, and yellow to indicate their features.
