Well, I think that the protection is not system-related. Works on both PC (all OS with USB support) as well as on Mac or on other devices (NAS, Multimedia Player) support what USB and NTFS.
The external power supply I have never needed.
Partly recognize the part the CHIP bad. That is tedious (unplugging and re-plugging). If the PC goes into standby, then you have every time unlocking (because Stomzufuhr interrupted).
With me now over several years of service.