I would want an RJ45 charger.
https://www.thingiverse.com/thing:6449087
I have not done a test print yet, but this might work. Requires a Apple USB-C cable because anything else is too big.
Well, you can buy them: https://www.coolgear.com/product/usb31-type-c-to-c-dual-screw-lock-cable
Why two different and incompatible options?
Or, more generally, why can’t I ever read some USB spec and get out with less questions than I had in the beginning?
These are for niche needs. For most applications neither is necessary. If needed and space is constrained the single pin variant allows additional connectors to be packed together on a single PCB. The dual pin option doesn’t, it takes up space that could be used for additional connectors.
Jack or Plug? if plug, would you want it to look like its plugged in, so just the retention tab and back half are sticking out?
https://www.thingiverse.com/thing:6449087
not tested yet
Cant do it, the BNC connector is not large enough to house a USBc end, even the Apple one which is the smallest I have. I would have to enlarge the BNC to a near comical size. Now if we removed the moulded housing it could be done, but it would have to be made on a bare PCB/Cable/Connector to be the right size.
An N connector should be just big enough, if not, use a 7/16 DIN connector then.