USB 4 specification officially announced: based on lightning 3 Type-C interface bandwidth up to 40Gbps
By Sigismondo Eisenhower 2019-09-04 177 0
USB4 introduced the Thunderbolt lightning protocol specification that Intel previously donated to the USB promotion organization. The two-link operation (Two-lane), the transmission bandwidth has doubled to 40Gbps, which is exactly the same as the Thunderbolt 3.
Of course, to achieve such a transmission bandwidth, a new and certified data line is required.
While introducing the new underlying protocol, USB4 still maintains good compatibility, and is backward compatible with USB 3.2/3.1/3.0, Thunder 3, which is now USB, Thunder 3 device and data cable, still available on USB4 interface Used on.
USB4 will only have a USB Type-C interface form (the Thunder 3 is also a mobile device), and supports a variety of data, display protocols, including DisplayPort, can fully utilize high-speed bandwidth, and also supports USB PD power supply.
As for the release time of the USB4 device, the USB-IF organization has not given a clear timetable. Obviously there are still, etc. After all, USB 3.2 (20Gbps) has not matured yet.
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