Speed up to 40Gbps Integrated lightning 3:5 words to understand USB 4

1. Transmission protocol:

USB4 absorbs the Thunderbolt 3 protocol, and the speed reaches 40Gb/s, which is twice the USB3.2 Gen2X2 protocol that has just been released without physical application! What can I do so quickly? Look at Article 2.

2. Interface equipment:

Because the lightning 3 interface uses PCIe 3.0 x4 channel, which means that the USB4 interface can also support PCIE devices - such as external graphics, external display (2 4K display @60HZ or a 5K display). At the same time, the interface is compatible with the old USB standard (such as U disk, keyboard, mouse, USB headset, etc.). And this bandwidth is dynamically shared, it is likely that a cable is enough (which means that HUB or multiple USB4 interfaces are needed).

3. Power supply and cable:

The new standard for USB-C (Type-C) cable is being developed with power supply reaching 100W.

4. Cost:

For free, companies only need to pay for testing and certification.

5, time:

Specific technical specifications will be announced at the USB Developers Conference in the second half of this year, including configuration requirements, standards for new USB TYPE C cables, and other details.

The USB specification is almost the most common interface in the computing industry—from mobile devices to laptops and desktops—since billions of devices have been in use since the interface was introduced in 1995. Each generation of updates will have new specifications, and the resulting increase in speed and compatibility . Over the years, the USB interface has been improved through free and continuous, resulting in the most common interface form.

In 2017, Intel announced the use of the PCIE channel Thunderbolt3 open free license, and replaced the Thunder 3 interface form with USB-C (Type-C).

Now, USF-IF officially announced the USB 4, integrated lightning 3 features, speed up to twice the speed of the USB 3.2 Gen2x2 that has not yet entered the practical - 40Gb / sec.

The channel for lightning 3 is PCIe 3.0 x4, which means that USB 4 can transmit data and 4K display protocol at the same time, which means that only one USB Type-C data cable can be connected to the display, external graphics card, high-speed mobile hard disk and so on. At the same time, it can also provide 100W power supply requirements (no need to bring a mobile phone charger for business trips, a notebook with USB4 is enough).