The USB Type-C interface, referred to as USB-C, is located at the bottom of the smartphone and is mostly used for charging, data transmission and other purposes. In December 2013, the USB 3.0 promotion team had released a rendering of the next-generation USB Type-C connector, which was then ready for mass production in August 2014. The biggest feature of the Type-C double-sided pluggable interface is that it supports double-sided insertion of the USB interface, which officially solves the worldwide problem of "USB can never be plugged in correctly", and can be plugged in at will. At the same time, the USB data cable used with it must also be thinner and lighter.

Type-C interface

The main function

1. fast

Theoretically, the highest transfer rate of a USB-C port is 10Gb per second. But Apple says the new MacBook's USB-C port has a maximum transfer rate of 5Gbps. The maximum output voltage is 20 volts for faster charging times. The USB-A type, so far, has a limit transmission rate of 5Gbps and an output voltage of 5 volts.

2. Generalist

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

3. Two-way

USB Type-C is not like the old USB port, power can only be transmitted in one direction, the power transmission of USB-C type port is bidirectional, which means that it can have two ways of sending power. Therefore, users can not only use notebooks to charge mobile devices, but also use other devices or mobile power sources to charge notebooks.

4. Backward Compatibility

USB-C can be compatible with the old USB standard, but users need to purchase an additional adapter to complete the compatibility. Apple said that not only Apple will officially sell adapters, but third-party companies can also authorize production.

Appearance introduction

1. Ultra-thin

Thinner bodies require thinner ports, which is one of the reasons why USB-C was born. The USB-C port is 0.83 cm long and 0.26 cm wide. The old-fashioned USB port, which measures 1.4 cm long and 0.65 cm wide, is outdated. This also means that the end of the USB-C data cable will be one-third the size of the plug of a standard USB-A data cable.

2. No pros and cons

Like Apple's Lightning connector, the front and back of the USB-C port are identical. That is to say, no matter how you insert this port, it is correct. Users don't have to worry about the pros and cons of traditional USB ports.