ResMed S9 Power Supply Unit 90W

Yes, but needs plug converter to suit European power outlets.

No, it is the basic power pack (mains to machine) required to run an S9 with a humidifier attached. An S9 not using a humidifier can use the 30w Power Supply unit

Yes this is the genuine 90w ResMed power supply required to power both the machine and humidifier

This is a power supply unit with an Australian plug configuration. In another country you would need to convert the plug configuration, however, this change would not affect the operation of the unit as it automatically works between 110v and 240v.