On the product page for ZED-X20P Qwic it indicates ‘The USB interface does not fully comply with industry standards and is unsuitable for production use. The USB 2.0 FS (full speed, 12 Mbit/s) interface can be used for host communication. Due to the hardware implementation, certifying the USB interface may not be possible.’ I am a loss to know how limiting this would be for configuring the receiver or obtaining data from it. I noticed that on the documentation for the ublox EVK-X20P evaluation kit, it has the same warning as the Sparkfun board, plus further ‘We recommend using USB-A to USB-C cable only. USB-C to USB-C type cable is not supported.’ The ublox kit has USB C at the receiver end and expects USB A to connect to a port on a computer with u center 2. So are these warnings likely to vanish once the certifying agencies get a chance to test ZED-X20P or did ublox maybe make a hardware mistake to be corrected in later chip versions? There are unfortunately no reviews yet for the Sparkfun kit that might give information about USB issues. Thanks for any insight ..