Hi Lukas,
I don't think your scheme could achieve.
Selecting a KL or K series MCU as the USB host device can handle the devices whose total number is based on the USB modules the USB host contains under without using the USB HUB.
In another word, if you want to the USB host device communicate with three or more devices, it can't work it out certainly.
Hope the reply helps.
Have a great day,
Ping
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