USB4 Version 2.0 now has official standard specifications for developers to follow after being first released last month. The USB-IF (USB Implementer’s Forum), the organisation that oversees USB, released new “USB 80 Gbps” certification marks that can be used on USB cables and devices that exceed the 80 Gbps speed, along with the updated documentation.
A space is widely used to spell USB 4, which was introduced in 2019 and offers connections up to 40 Gbps while being compatible with Thunderbolt 3 and 4. To power high-resolution monitors, USB 4 version 2.0 increases the maximum bandwidth to 80 Gbps, but it can go even faster—up to 120 Gbps in one direction (with a 40 Gbps downlink).
Without the requirement for compression, the standard can power a 4K display at up to 240 Hz or up to a 10K display at 60 Hz using the bandwidth of USB4 v2.0, which is completely compatible with DisplayPort 2.1.
Both the new, active 80 Gbps cables and the older, 40 Gbps passive USB4 cables are compatible with USB4 version 2.0. It will be “closely aligned” with PCIe 4.0 and compatible with DisplayPort 2.1, according to USB-IF.
Given that the initial USB 4 specification was unveiled in 2019 and that USB 4-branded items have just recently begun to appear, we don’t anticipate the release of any USB4 v2.0 devices for at least a year. You might, however, notice the new USB 80 Gbps emblem on their packaging or even on their ports when USB4 v2.0 devices appear on sale.
However, USB-IF stating said that they do not want customers to consider version numbers when purchasing products. Instead, they urge manufacturers to use names and emblems like USB 5 Gbps, USB 10 Gbps, USB 20 Gbps, USB 40 Gbps, and now USB 80 Gbps to advertise the fastest possible speeds for all USB products.
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