Thunderbolts (connector USB C) don't recognise anymore external devices
I have a MACBOOK PRO 2019 , 13 Inches with 2 Thunderbolts 3 ports
My 2 USB connectors suddenly stop recognise any external devices(hard drive, iPhone) , electricity goes through .
I tried different cables, different devices , I look at various settings, and couldn't resolve
What step can I take to resolve this issue ?
Thank for your help
MacBook Pro 13″, OS X 10.11