USB interfaces have seen significant development over the years, and with each new version, the naming conventions and claims of performance have become increasingly difficult to track. Camera makers and system integrators face a simple question: what do these USB generations really signify, especially when trying to understand USB 3.2 Gen 1 vs Gen 2, and how does USB 3.2 Gen 2×2 relate to today’s USB camera design?
This article clarifies USB 3.2 generations in a simple and practical manner, particularly focusing on USB cameras and how higher, bandwidth interfaces like USB 3.2 gen 2×2 are opening new possibilities in ultra-fast imaging applications.

From USB 3.0 to USB 3.2 Gen 2×2: Clearing the confusion
USB 3.0 was a landmark update to USB 2.0 that was released in 2008. It significantly improved the data transfer rate from 480 Mbps to 5 Gbps. After some time, USB standards were renamed to make things easier for backward compatibility and standardization.
So, the USB 3.0 standard has been renamed USB 3.2 Gen 1. Technically, they are the same standard, both supporting a bandwidth of up to 5 Gbps. USB 3.2 Gen 1 is still a pretty common standard for many USB cameras nowadays, and it is enough to handle moderate resolution and frame rate. But, as cameras get better, the limitations of Gen 1 are becoming quite clear, especially when you look at USB 3.2 Gen 1 vs Gen 2 for high-performance cameras.
For more details
https://www.vadzoimaging.com/post/usb-3-2-gen-2×2-usb-gen-1-2-cameras