SLYY228 November 2024
Before discussing the protocol itself, the connector is an important medium to the interface that has taken on different forms over time. This is important to distinguish, as moving forward, the ever-improving USB protocol capabilities will require the USB-C connector to attain the full feature set. Figure 4 shows the different USB connectors leading up to USB-C.
Figure 4 USB Connector OverviewGenerally more well known as the most popular and common USB standard is USB Type-A, which began use around 1996. You’ll find USB Type-A ports in host devices such as desktop computers, game consoles and media players.
USB Type-B connectors are on one end of typical USB cable that plugs into a peripheral device, such as a smartphone, printer or hard drive. These also debuted in 1996, typically to control a device that connected through Type-A to a PC on the other end.
USB-C was implemented into several popular phone and notebook brands around 2015. USB-C had an innovative design in terms of connector reversibility for ease of use and downsizing to minimize its impact on thinner and sleeker devices. Figure 5 shows the progression of USB cables from USB Type-A to USB Type-C while Figure 6 taking a closer look into the USB-C connector itself.
Figure 5 USB Cable Overview
Figure 6 USB-C Connector
Overview