I have purchased and returned several USB-C Hubs. That is from USB-C on my MacBook to HDMI/USB-A etc, every single one I've tried cannot hold the connection to external hard drives and either immediately or after a few minutes, the drive is dropped/ejected and I get the warning notification from the OS. A $9 USB-C to A adapter works perfectly on all drives as does one cheap, no-brand hub that my wife bought somewhere and I cannot find on sale. All suggestions appreciated. Cheers Robert