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Interpretation of the New USB4 80G Specification

USB-C Charging cable factory

USB4 is a new USB protocol standard that can support high-speed data transfer, video output, charging, and other functions. The “80G” refers to the maximum data transfer rate of up to 80Gbps. Here are some interpretations of the USB4 80G new specification:

  1. Based on Thunderbolt 3: The USB4 standard is based on Intel’s Thunderbolt 3 protocol standard, so the speed and performance of USB4 are similar to Thunderbolt 3.
  2. Supports bidirectional 40Gbps transmission: The USB4 standard supports bidirectional 40Gbps transmission, which means that devices can send and receive high-speed data at the same time. For example, a computer can simultaneously send a video signal to a display and receive touch signals from the display.
  3. Multi-channel support: The USB4 standard supports multi-channel transmission, which means that devices can use multiple data channels to transmit data at the same time. This can improve bandwidth and transmission speed.
  4. Compatibility: The USB4 standard is compatible with USB 3.2, Thunderbolt 3, and USB 2.0 devices. This means that you can use USB4 cables to connect different types of devices.

USB4 v2 80Gbps What are the changes?

1, E-Marker declared as 100b

more info: https://www.usb.org

2, Active line design

3, LRD Cable Architecture & Design Considerations

4, LRD Cable Testing


5, USB PD E-Marker Test

6, USB4 Gen4 passive cable is electrically equivalent to USB4 Gen3 passive cablee

7, USB4 only support connector which is type c to type c

8, Type-C to Type-C cables must carry the Association’s specification logo when sent for certification.

In a word, as technology update day by day, USB4 will become all connector standard. USB4 240W 40G

will be more peples

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