easiest way to identify usb3 is look at color, both connector and connectee shall be blue
after i install freebsd and reboot, POST can't finish, i have to unplug power cord
it's easy to explain why booting is bug-prone, it involves 2 parties, bios maker and OS developer
at first i thought it might be caused by this usb stick's new feature of 2 interfaces, then i believed it was caused by 2 hard disks during installation, now i think developers focus on mainstream uefi, mbr isn't well supported
always remember this is free software and debian disclaimer