Hi all,
with the difficulty to buy a good usb mining hub , I finally worked on my own design
https://i.ibb.co/Nj56pdq/usb-mining-hub.png
main features :
pci-e power connector 12V
3 power linear regulator 5A each
3 variable resistor to adjust 5V output
Atmega328 with LCD to display data like power of each usb port like usb key power meter

4 ports USB and 2 with just power for raspberry or fan

ports 1 and 2 share same 5V with usb hub data
port 3 share same 5V with one usb hub data and port4 with just power (fan, raspberry)
same configuration for port 5 and 6

I plan to add connector for fan because a thermal dissipator is need for the 3 linear regulator and a sensor to manage temperature

It works since one week without any issue
https://i.ibb.co/Kz3t75m/cgminer.png
Now I need program ATMega to display data and my prototype will be finish

https://i.ibb.co/1b5ZdBd/001.png
https://i.ibb.co/YcZJGGr/002.png