USB 2.0 Type A and USB 1.1 Type A connectors are often, but not always, black. Note: The male USB Type A connector is called the plug and the female connector is called the receptacle but is commonly referred to as the port.ype A is the original USB connector and is the most recognizable and commonly used connector. USB Type-A connectors are supported in every USB version, including USB 3.0, USB 2.0, and USB 1.1. USB 3.0 Type A connectors are often, but not always, the color blue.