{"id":24451,"date":"2019-02-27T16:27:45","date_gmt":"2019-02-27T21:27:45","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=24451"},"modified":"2019-02-27T16:27:45","modified_gmt":"2019-02-27T21:27:45","slug":"confusing-usb-3-2-branding","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2019\/02\/27\/confusing-usb-3-2-branding\/","title":{"rendered":"Confusing USB 3.2 Branding"},"content":{"rendered":"

Juli Clover<\/a> (via Marco Arment<\/a>):<\/p>\n

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Going forward, USB 3.1 Gen 1 (transfer speeds up to 5Gb\/s), which used to be USB 3.0 prior to a separate rebranding, will be called USB 3.2 Gen 1, while USB 3.1 Gen 2 (transfer speeds up to 10Gb\/s) will now be known as USB 3.2 Gen 2.<\/p>\n

What used to be considered USB 3.2 will now be USB 3.2 Gen 2x2 because if offers twice the throughput speeds of USB 3.1 Gen 2, now USB 3.2 Gen 2. If that sounds confusing to you, you’re not alone.<\/p>\n<\/blockquote>\n\n

Peter Bright<\/a> (Hacker News<\/a>):<\/p>\n

What this branding meant is that many manufacturers say that a device supports “USB 3.1\" even if it’s only a “USB 3.1 Gen 1\" device running at 5Gb\/s. Meanwhile, other manufacturers do the sensible thing: they use “USB 3.0\" to denote 5Gb\/s devices and reserve “USB 3.1\" for 10Gb\/s parts.<\/p>

[…]<\/p>

The good part of all this is that USB 3.2 could mean 5, 10, or 20Gbps. You can bet that there will be manufacturers who are going to exploit that confusion wherever and whenever they can.<\/p><\/blockquote>\n\n

Previously:<\/p>\n