Today's mobile phones with USB Type-C connectors and traditional micro USB sockets account for about half to half of the market. Most of the mobile phones using the Type-C connector interface are domestic mobile phones, while the old mobile phone manufacturers like Samsung, Motorola and Sony still use the traditional micro USB interface, which means that the industry analyzed the second half of 2015. -C will have a big outbreak and it has not appeared.

At first glance, Type-C does have many advantages that micro USB does not have. For example, it can be plugged and unplugged regardless of the front and back, and there will be a significant increase in transmission speed and charging speed. However, the large-scale popularization of Type-C may take some time, it is not invulnerable, and there are still many obstacles for ordinary consumers.

Type-C does not mean faster charging speed

We mentioned above that the Type-C connector can provide faster charging speed, which is not wrong, but this is only for Type-C that conforms to the USB 3.1 standard. USB 3.1 supports USB-PD (PowerDelivery) power supply standard, the maximum power supply can reach 100 watts (W), the charging speed will indeed be greatly improved.

But for the Type-C interface phone that is only the USB 2.0 standard, it does not support true fast charging. The most obvious example is one plus two. In fact, we have not encountered the type that really supports fast charging. C mobile phone.

Type-C does not mean that data transmission will be faster.

Similarly, Type-C supports faster data transfer speeds and refers to interfaces that conform to the USB 3.1 standard. Many devices that use Type-C connectors are not using the USB 3.1 standard, only the appearance changes. Moreover, even if your Type-C is a standard USB 3.1 interface, but most of the computers and some other devices on the market are still based on the USB2.0 standard, and the transmission speed is not fast enough.

Waterproof Type-C connector

Type-C is not compatible with existing micro USB devices. Imagine if you are using a mobile phone with a Type-C connector, just forget to bring a data cable and a charger when you are on a business trip. If you want to borrow someone from your side, you will find that others don’t have such a data cable at all. Is there any The feeling of crying and tears.

At the same time, you may have a lot of accessories and devices for the micro USB interface, but when you switch to Type-C you will find that these devices have turned into a bunch of garbage.

Type-C accessories are expensive

We all say that things are rare, and the accessories of Type-C connectors are also the same. We use Apple's officially designed for MacBook, which can realize HDMI, standard USB 3.1 and USB-C output USB through USB-C interface. For example, the CAV video converter allows the MacBook to connect to an external display at 4K/60Hz or 1080P/30Hz, and also serves as a general USB device with an external power supply.

But its price is as high as 588 yuan, which is almost the price of a domestically produced smartphone below the mainstream thousand yuan.

Type-C security is worrying

Due to the openness and flexibility of Type-C, it is more vulnerable to a wide range of attacks, especially in the face of BadUSB vulnerabilities, hackers can avoid the data read area, and store malicious code in the USB device controller. A firmware store that allows users to infect malicious devices to electronic devices before they are found.

The most frightening thing is that even if we find that our device is infected with BadUSB, it can't be cleaned up by ordinary anti-virus software or formatting, and security experts say it is unlikely to fix the BadUSB vulnerability.

However, using the USB interface, you must follow the USB standard, which has hidden some hidden dangers, which is unavoidable by all manufacturers.