Hardware

- Does it work if you connect it directly (out of the case for an experiment)? You didn't tell.
- Does another USB-device (like a USB-stick) work with the same 2 cables in between?
- Try one cable less with https://www.onlinekabelshop.nl/usb-c-m-haaks-links-rechts-usb-a-v-adapter-usb3-0-zwart-0-15-meter, for example (in The Netherlands, alas)

Would have us in a lab to dissect the parts that don't work. This would be very expensive so my advice is to try just a right angle thing like https://www.amazon.com/Adapter-Ruaeoda-Degree-Extension-MacBook/dp/B077XL7Q7H/ with the adapter to see if that works before any other USB extender cable.

Another idea would be to put some USB C hub in the box that you cable over to and see if the Ethernet works on that hub.

https://www.amazon.com/Tripp-Lite-Ethernet-Thunderbolt-U436-06N-GBW-RA/dp/B07QPJ6Y4J#HLCXComparisonWidget_feature_div

Thanks for the responses.

Let me first confirm the adaptors (3 of them) all work fine for ethernet and USB A devices when plugged in directly, should have mentioned this.

In fact usb devices also do not work when using extension cables, i have tried using 4 different cables.

After further research i'm wondering if its a voltage drop issue, as have found other discussions regarding USB hub extensions with very trial and error results dependant on the cables used. Also as i cannot find a usb c male to usb c female extension cable with the right-angle connection flush enough to work, i am having to also add a coupler to the equation which likely is not helping.

Kees_B that link did not work for me

rproffitt, was thinking of tryng one of those right angle adaptors but they are slightly wider then the right angle cables i found which fit better into the case, maybe this is my next attempt though

itsdigger thanks for the link, unfortunately as i'm UK based all the suppliers for that device are over $100 shipping! lol.