There are a few ways to differentiate USB 2.0 and 3.0 ports and connectors. The easiest way is to check if the USB port has a splash of blue color inside, which signifies the newer USB 3.0 interface.

Manufacturers use color coding to differentiate between the different USB port formats. For instance, a red USB port is typically used for USB 3.1 Gen 2 and USB 3.2 standards, while blue ports ...