The power is well connected ... maybe i should try on my Win partition ?Yes, maybe a power issue. Make sure you have connected a power cable to the PCI-e card internally.
But i am not on Hight Sierra i am on sierra ...? Maybe this is the problem ?
The problem is my audio card is powered thru the cable and the computer... no dedicated power ..
The power is well connected ... maybe i should try on my Win partition ?
Yes i did this ... i ll try on windows and give you the result thank youIf you have already connected the following to your power supply, I don't know what else you can do to add power.
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Yes, please try and see if Windows sees your device.
When i plug an other USBC device I had a message : thunderbolt is not working with this mac ?
Edit : it happen when i plugged my audio card on one of my usb 3 of my motherboard with a usb to usbc cable ...