What is USB-C? A computer engineer explains the one device connector to rule them all

Apple announced on Sept. 12, 2023, that it plans to adopt the USB-C connector for all four new iPhone 15 models, helping USB-C become the connector of choice of the electronics industry, nine years after its debut. The move puts Apple in compliance with European Union law requiring a single connector type for consumer devices.

USB-C is a small, versatile connector for mobile and portable devices like laptops, tablets and smartphones. It transfers data at high speeds, transmits video signals and delivers power to charge devices’ batteries. USB stands for Universal Serial Bus. The C refers to the third type, following types A and B.

The USB Implementers Forum, a consortium of over 1,000 companies that promote and support USB technology, developed the USB-C connector to replace the older USB connectors as well as other types of ports like HDMI, DisplayPort and VGA. The aim is to create a ...