[TRACKING] Test results for standby battery use of Expansion Cards

[mjog]

Ah although perhaps answering my own question, further down that thread:

@Nils

I recall reading elsewhere that the problem is not that the USB-A card itself is active, but that it makes a connection between some pins on the port, showing that a device is “plugged in”, where the USB-C protocol then requires some polling on the laptop side to see if the device has any requests.