In reply to a post by Pheasant:

They have claimed USB 4 (up to 40 Gbps) with every Apple Silicon generation that I'm aware of.

M series processors, not the A series. The M series are USB 4 / Thunderbolt.

The A series with lightning are only USB 2, but the A series with Pro (15 Pro/Pro Max etc) with USB-C ports are USB 3 (10 Gbps), viz:
https://support.apple.com/en-us/111829

10Gbps seems to be USB 3.2 Gen 2 (aka Gen 2x1) in the insane naming of the USB-IF committee. (Formerly known as 3.1 Gen 2… )

USB 4 has similar stupid naming, until I read Wikipedia’s article, I didn’t realise USB 4 was based on Thunderbolt 3 design/signalling.

Indeed squire. Not referring to the telephonic instruments.

Apple Silicon being the moniker of M-series desktop and laptop beasts since they parted ways with Intel. iPads and iPhones as you’re all too well aware have always been “Apple Silicon” since inception.

USB naming, etc just leaves me confused 😵‍💫

In reply to a post by Pheasant:

Indeed squire. Not referring to the telephonic instruments.

Apple Silicon being the moniker of M-series desktop and laptop beasts since they parted ways with Intel. iPads and iPhones as you’re all too well aware have always been “Apple Silicon” since inception.

They use the "Apple Silicon" any time Johnny Sriji is on screen for all the products

USB naming, etc just leaves me confused 😵‍💫

Someone needs to beat the USB-IF around the head with a wet kipper, skipper.

I guess to be a someone in Apple you need to be a Johny or a Jony 😅

In reply to a post by Pheasant:

I guess to be a someone in Apple you need to be a Johny or a Jony 😅

LOL.. and I obviously can't spell.

https://en.wikipedia.org/wiki/Johny_Srouji

No fear, I’m not the grammar and spelling police👮…today anyway 😉😂

Edit: my OP is full of complete howlers with FireWire splattered in place of Thunderbolt. Sadly I didn’t even clock it when I was writing it. How bad is that!!

Edited by Pheasant (Sat 16-Nov-24 11:14:41)

In reply to a post by TinyMongomery:

Ah, then they are non-compliant iwith the USB specifications.

...yes as it stands, from what I've (very limited) tested. They're certainly not compliant with USB 3.2 Gen 2x2 device(s) - or at least don't pass the full line rate, just 10 Gbps.

However if the device says its USB 4 then they appear to be compliant (pass full rate) @ 40 Gbps.

I'm not going to waste time asking Apple 'why' this is. Doubtless they will just point me to the spec. page of the earlier machines which says USB 4 (up to 40 Gb/s) and USB 3.1 Gen 2 (up to 10 Gb/s).. and the latter takes precedence in Apple-universe.