Very slow transfers. I started to investigate.
W10 Pro 64 bit.
Passport is connected to a 7 port USB 3.0 hub, which is in turn cabled into a USB 3.0 PCI card as my PC is USB 2.0. Also on the hub is another external drive, a Samsung M3, also USB 3.0. Crystal Disk Mark shows much better figures for the Samsung than the Passport.
I then discovered the MS utility, usbview.exe, which shows large amounts of information about the drive. Including whether it supports USB 3.0. According to this programme, the Samsung does but the Passport does not.
Which suggests I have been sold a pup… I have logged a support ticket but heard nothing bar an acknowledgement email.