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A comment on iPhone 15 Pro Max can degrade Thunderbolt peripherals (2023). Parent comment

Re:iPhone 15 Pro Max can degrade Thunderbolt peripherals (2023) by thrdbndndn on Monday September 16, 2024 @11:51PM (#41563931)
For 2, I usually blame it on the hub; but it's hard to find, or even define what is a "proper hub". I genuinely don't know how they work (like, if I plug 4 external HDDs to a hub surely they have to split the bandwidth? Is there a limit?) and what spec they are supposed to follow to make they work 100 of 100 times across multiple OS.

I have ones only work well on PC, and ones only work well on MacOS in all these years. I tried to purchase not-so-cheap ones but at the end of the day it's still a gamble everytime.

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Re:iPhone 15 Pro Max can degrade Thunderbolt peripherals (2023) by winkelmann on Tuesday September 17, 2024 @12:41AM (#41564176)
Hubs are part of the USB spec I'm pretty sure. The hub's controller should also handle bandwidth bottlenecks.

As for the hubs in point 2, I am actually using a chain of three USB hubs between my Mac Mini and some of my peripherals (4 hubs if you count an internal one), which so far has worked without issues; I think all three of them caused instability on the USB-A ports. Again, the ports work fine when only one peripheral is connected directly, I plugged in two disk enclosures that saturate 5 Gbit/s and didn't see any issues when reading from both simultaneously.

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Re:iPhone 15 Pro Max can degrade Thunderbolt peripherals (2023) by thrdbndndn on Tuesday September 17, 2024 @03:57AM (#41565417)
Most of issues I encounter with hubs are during plugging/removing a device from it.

For example, I have at least 2 hubs that will lost all of their connected devices temporally if a new (externally powered) 3.5" HDD is connecting. They work fine after that. I assume it's related to their (poor) electric design than the information signal part.

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