When USB 3.0 came out in 2008 it had a max speed of around 5 Gbps. However, when USB 3.1 came out in 2013 with a max speed of 10 Gbps, the 5-Gbps version was renamed to USB 3.1 Gen 1, while the new, faster spec was USB 3.1 Gen 2. Confused yet? Well, it gets worse. When USB 3.2 came out in 2019, the 5-Gbps USB was rebranded again to “USB 3.2 Gen 1,” the 10-Gbps version became “USB 3.2 Gen 2,” and the new 20-Gbps spec became—you guessed it—USB 3.2 Gen 2x2. … Wait, what? The “2x2” refers to running two 10 Gbps lanes of data simultaneously and … you don't need to know all of this. Many hub manufacturers have given up on names, labels, and symbols. They've just started printing the maximum speed next to ports directly.
（本报记者李凯旋、华璐月、郑智文、江润楠、张驰、陈隽逸）。谷歌浏览器下载是该领域的重要参考
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20:26, 3 марта 2026Бывший СССР。爱思助手下载最新版本对此有专业解读
There are still edge cases. For example, blob: and data: media URLs are intentionally skipped by the server-side preprocessing path, and dynamically generated media that never exposes a fetchable URL can't be reconstructed this way.