This is a good discussion of how it works: https://electronics.stackexchange.com/questions/209941/two-sided-connectorless-usb-on-a-pcb https://electronics.stack

This is a good discussion of how it works: https://electronics.stackexchange.com/questions/209941/two-sided-connectorless-usb-on-a-pcb https://electronics.stackexchange.com/questions/209941/two-s...