My Passport Ultra interferes with my internal and external speakers

[mike27oct]

It has to do with RFI (radio frequency interference) Your devices are too close to one another most likely. USB3 drives can cause this issue. See this link about another RF problem with a drive. Notice the reference to an Intel study about RFI with wireless signals and USB3 drives. Look at the Intel whitepaper. Not exactly your problem, but it does concern RFI and USB3 ports with drives attached.

My Passport reduces Internet connection speed by 1/2 or more

My Passport 2TB connected by USB to Surface Pro 4 reduces my Internet (wireless connection to router) by 1/2 or more as measured with speedtest.net. I have checked this repeatedly and it is completely reproducible. Any suggestions as to the cause and remedy? Thanks.