The new generation of usb4 is supported by Apple’s m1 chip, with a transmission rate of up to 40gbps, and makes the USB-C connector the only ruler of the protocol. Compared with USB 3, Thunderbolt 3 is not only faster, but also because of its high bandwidth, it can control up to 4 4K display or 2 6K resolutions. Leading the industry trend, we can see that although the standardized naming and various interfaces of USB seem confusing, the latest standard USB4 has many advantages, such as the same 40Gbps transmission rate as Thunderbolt 4; backward compatibility with previous specifications, etc. , using a USB4 device and cable, which is exactly possible, so it may be affordable for a larger market, in addition, the protocol is smart enough to keep frame rate of the connected display stable  while pushing data to an external hard drive .As we all know, Apple has the ability to lead the industry trend. M1 chip is the first to support USB4, which can further accelerate the popularization of this specification.

Into a new technology, Apple has always had a great influence and voice in the entire industry. As long as it follows up with a new technology, other manufacturers will also start to pay attention and introduce it. If you remember correctly, Apple started in 2016. The magnetic charging interface of the MacBook series was canceled and changed to Type-C. Although this change has been controversial in the outside world, it is undeniable that MacBook products using this interface are both in terms of data transmission and charging efficiency. There has been a significant improvement.

The new USB4 architecture of a kind of terminal device defines a method for dynamically sharing a single high-speed link and multiple terminal device types. It is the  most suitable for data transmission by type and application. Because the USB Type-C connector has been developed as an external device for many host products Display port, so the USB4 specification allows the host to expand the distribution of the display data stream in the best way. The M1 chip supports the USB4 specification, which means that the new MacBook Pro 13-inch, MacBook Air and Mac Mini Type-C will support High-bandwidth interface, while Apple's Mac series products will be connected to more devices in the future to transmit more data.

Earlier, a report released by Tianfeng International analysts showed that Apple is developing AR glasses and is expected to be released in 2022 at the earliest. Based on current technology, AR glasses need a powerful computing power carrier which is the so-called PC, and if you want to ensure low picture latency, you need faster data transmission. The USB4 specification can just meet this demand. Of course, these are just conjectures. At the same time, the new interface will inherit the excellent tradition of backward compatibility.The old USB standard (U disk, keyboard, mouse, USB headset and other devices can be accessed through the Typc-C interface).