In 2015, the USB-C (Universal Serial Bus Type-C) connection variant was unveiled. Because it enables USB 3.1, a USB-C link can transmit or receive data at up to 10 Mbps and electricity at up to 20 volts or 100 watts. The USB-C connection is balanced, unlike the earlier USB Type-A and USB Type-B terminals, so you never have to be concerned about putting the cord in the incorrect way.

Since the USB interface was defined in 1996, the USB connection has undergone numerous changes. The USB-C adapter represents the biggest shift. The smooth, rectangle USB-A connection was the same for USB versions 1.1, 2.0, and 3.0. Mini-USB and Micro-USB are two of the many USB-B variants that have been created, but they are all intended for auxiliary devices that attach to a Type-A connector on the other end. The Type-C connection that USB 3.1 debuted is made to be identical on both sides.

Since the normal USB-C connection is roughly the same height as a Micro-USB socket, there is no small or miniature form of USB-C. It can therefore be applied to compact devices like cellphones and laptops. It is also possible to use USB-C as a notebook charge connection because it can handle up to 100 volts of electricity. In actuality, the 2015 Apple MacBook and Google Chromebook Pixel, the first computers with USB-C connections, lack charge plugs. Instead, the USB-C connector and charging cord are immediately connected.

Although USB-C connections are backwards interoperable with other USB standards, a USB-C adapter will only work in a USB-C socket. Therefore, earlier USB devices can be connected to a USB-C interface using a USB-C to USB-A or USB-C to USB-B converter. The power and data transmission rate will, however, be restricted to the lesser standard.