The USB Type-C interface, abbreviated as USB-C, is located at the bottom of smartphones and is mostly used for charging, data transfer, and other purposes. In December 2013, the USB 3.0 promotion team announced the rendering of the next generation USB Type-C connector, and in August 2014, it was ready for mass production. The feature of Type-C double-sided plug-in interface is that it supports double-sided insertion of USB interface, officially solving the worldwide problem of "USB insertion error", allowing for easy insertion of both sides. The USB data cable used in conjunction with it must also be thinner and lighter.

major function 

1. Quickly

In theory, the high transmission rate of USB-C ports is 10Gb per second. However, Apple stated that the USB-C port of the new MacBook has a high transfer rate of 5Gbps. The output voltage is 20 volts, which can accelerate the charging time. The USB-A type has a maximum transmission rate of 5Gbps and an output voltage of 5V so far.

2. Versatile

The USB-C port of the new MacBook can transfer data, charge, and also serve as a video output port to connect external display devices. The question is how Apple can satisfy users who want to do all three things at the same time.

3. Bidirectional

Unlike the old USB ports where power can only be transmitted in one direction, USB Type-C ports have bidirectional power transmission, which means it can have two transmission power modes. So, users can not only charge their mobile devices with their laptops, but also use other devices or power banks to charge their laptops.

4. Backward compatibility

USB-C is compatible with the old USB standard, but users need to purchase an additional adapter to achieve compatibility. Apple stated that not only will Apple officially sell adapters, but third-party companies can also license their production.

Appearance Introduction

1. Ultra thin

Thinner bodies require thinner ports, which is one of the reasons why USB-C has emerged. The USB-C port is 0.83 centimeters long and 0.26 centimeters wide. The old-fashioned USB port, measuring 1.4 centimeters in length and 0.65 centimeters in width, has become outdated. This also means that the end of the USB-C data cable will be one-third the size of a standard USB-A type data cable plug.

2. No positive or negative

Like Apple's Lightning port, the front and back of the USB-C port are the same. That means no matter how you insert this port, it is always correct. Users do not need to worry about the positive and negative issues caused by traditional USB ports.