what is a reversible usb cable？

what is a reversible usb cable？

The USB interface has four pins, the two sides are responsible for power supply, and the short one is responsible for transmitting data. Since both computers and digital devices use direct current, the USB interface strictly distinguishes between positive and negative. If the positive and negative poles are reversed, the device cannot be properly connected, and the chip of the electronic device or even the computer motherboard is burnt.

The earliest role of USB cable is to transmit data. The main responsibility is to ensure the safe transmission of data, which is convenient and easy to use. Its designers also did not expect this interface to become so popular in the future, and people were plugged in every day. And at that time (USB interface was introduced in 1994) the computer equipment is very expensive, if it is just because the "plug is reversed" such a mentally handicapped error resulting in equipment reimbursement or data loss, then it is a bit too mentally retarded. So the original USB creators added this foolproof design to it.

But no one has thought that USB will become one of the most popular data interfaces in the world. In addition to computers, the most commonly used mobile phone data lines use it. And once a standard is popularized, even if it has many shortcomings, it is difficult to modify it.

In fact, there were also male designs that could be inserted in both positive and negative, but they were not popular because of cost constraints. Since the USB Type-A female has been finalized, it is only possible to make a fuss on the (male). A data cable that can be blindly inserted at both ends. One end of the connection to the mobile phone is a USB Type-C; the end connected to the computer is specially designed to be reverse-inserted. However, this data line plug requires more electronic components, and the manufacturing cost will naturally increase.reversible micro usb cable,

With the popularity of USB Type-C interfaces that can be plugged in both positive and negative, computer and mobile phone manufacturers are beginning to phase out the old USB Type-A. For example, the latest MacBook only retains the USB Type-C interface, and can no longer find the familiar USB Type-A. Although such a design is considered very troublesome by many users, it represents the future trend. As our commonly used U disk, charger, data cable and other devices are replaced by USB Type-C, the USB Type-A that needs to distinguish between the front and the back will eventually exit the historical stage.

what is a reversible usb Type c cable？

Type-C is a connection interface of USB interface. It can be inserted in both sides. It is about 8.3mm×2.5mm. It supports USB standard charging, data transmission and display output like other interfaces. The Type-C interface is a relatively new type of interface and is expected to become popular soon, like the new MacBook and LeTV phones.

USB Type-C has the following features:

The size of the Type-C interface socket end is as small as the original Micro USB specification, which is about 8.3mm × 2.5mm;

Can withstand 10,000 times of repeated insertion and removal;
Supports "positive and backward insertion" function that can be inserted from both sides (similar to Apple Lightning interface);
Slim design
The maximum data transmission speed reaches 10Gbit/s, which is also the standard of USB 3.1;

Standard-size cable with Type-C connector can pass 3A current, and also supports "USB PD" beyond the existing USB power supply, can provide up to 100W of power

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