The USB-IF forum has officially announced the USB 4 connection standard. Although there is no official spec, the connection standard is expected to have a bandwidth of up to 40Gbps, double the 20Gbps of USB 3.2.
The 40Gbps number is the bandwidth of the Thunderbolt 3 connectivity standard that Intel launched in 2015. However, Thunderbolt 3 has not been widely used by manufacturers due to obstacles to licensing costs with Intel. With USB 4, Intel has kept its promise to manufacturers in popularizing their connectivity standards.
As mentioned above, USB 4 has parameters similar to Thunderbolt 3: including the ability to provide power up to 100W, 40Gbps bandwidth allows users to output images to two 4K monitors or one monitor Figure 5K or connect to a discrete graphics card.
Using the same Thunderbolt 3 specification means that USB 4 also uses the same USB Type C interface as Thunderbolt 3. So users can use the existing Thunderbolt 3 cables for USB 4. This is also dynamic. to simplify USB-IF’s USB ecosystem.
Intel said that the two Thunderbolt 3 and USB 4 connectivity standards will coexist, and Intel will require manufacturers to certify the use of Thunderbolt 3 on their products to provide support in terms of Best technique.
The full specification of USB 4 will be announced in the second half of 2019. The USB-IF organization also said it will take more than a year and a year and a half for manufacturers to integrate into the final Connect this to their products
