Thanks very much for the reply !
How did you do that ? I can´t do anything with S/L/E ! Where I can find these kexts and where to replace them ?There is 2 methods to resolve this.
1) You can replace the 5 IOUSB* kext in S/L/E with the one in High Sierra (post 8472 from webg3 gave me the idea to try that)
I already tried this with no solution2) Use the legacy iSight patch in dosdude1 post install tool (post 8692 from SpinThis!)
I tried the Logitech C615 and Microsoft HD 3000, both the same ...Both methods worked for me for Brio and C920 Logitech webcam on my Mac Pro 3.1.