In the worst case, an expensive TB3 SSD with a regular write speed of 2.2 GB/s could only write at 400 MB/s when connected via a hub and contending with faster SSDs.
hub
From choosing cables and hubs to connecting displays, fast SSDs and other devices. Everything you wanted to know about Thunderbolt.
What happens to read and write speeds of three SSDs connected to the same hub, and working at the same time? Can they exceed the maximum of 3 GB/s?
If you have more than a couple of Thunderbolt peripherals, should you be thinking of getting a Thunderbolt 4 hub?
What happens when you connect two fast SSDs to your Mac and they both write or read at the same time? How do they perform when connected through a hub? And how does it pay to be a winner?
You pay hundreds of $$ for a high-speed Thunderbolt SSD, then connect it to a hub. Will it still deliver the same performance? Maybe not when writing.
Do fast Thunderbolt SSDs slow down when connected via a Thunderbolt hub? How fast are they when reading at the same time? Does connecting a display affect them?
It has been years coming, but I’ve finally got a Thunderbolt hub/dock which lets me connect more TB3 disks. Was it worth the wait and cost?
Although little more expensive than good Thunderbolt 3 cables, what are the differences in Thunderbolt 4? When do you need a new TB4 cable?
Connecting external storage to the USB-C ports on an external display is a great idea until the display goes to sleep.
The Eclectic Light Company 