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From the article: > "But why is the 16-inch MacBook Pro able to run USB 3.1 (10Gbps)?" USB 3.1 Gen 1 is 5 Gbps, not 10 Gbps. (My Thunderbolt LG Ultrafine 4K
by Reason077 3y ago
From the article:
> "But why is the 16-inch MacBook Pro able to run USB 3.1 (10Gbps)?"
USB 3.1 Gen 1 is 5 Gbps, not 10 Gbps.
(My Thunderbolt LG Ultrafine 4K also has USB 3.1 Gen 1 ports on it, so I should know...)
- jeroenhd 3y agoI think they mean USB 3.2 Gen 2x1, which does support 10Gbps throughput. Apple's tech support page about their Thunderbolt 4 cable (https://support.apple.com/en-om/HT210997 https://support.apple.com/en-om/HT210997) also states "USB 3.1 Gen 2 data-transfer speeds up to 10Gbps". I'm a little confused by Apple's machines wouldn't support USB 3.2 Gen 2x2 when they support USB 4 and Thunderbolt. I guess they couldn't figure out how to get faster USB out of their chipset? They list the same limitation on their iMac USB 3 ports (https://support.apple.com/guide/imac/take-a-tour-imac-apd2e7352054/mac https://support.apple.com/guide/imac/take-a-tour-imac-apd2e7...).
- Reason077 3y ago> "I think they mean USB 3.2 Gen 2x1, which does support 10Gbps throughput." They explicitly say USB 3.1 Gen 1 in the article, and the linked technical document [1] > "I'm a little confused by Apple's machines wouldn't support USB 3.2 Gen 2x2 when they support USB 4 and Thunderbolt." Yeah, it's weird, but Apple has never supported Gen 2x2, AFAIK. 2x2 means you have two 10 Gbps channels running in parallel on two sets of pins, but USB 4 does a similar thing to get 40 Gbps and they do support that. Shrug. [1] https://fabiensanglard.net/xdr/Pro_Display_White_Paper_Feb_2020.pdf https://fabiensanglard.net/xdr/Pro_Display_White_Paper_Feb_2...