Hello KxUser, welcome to the WD Community.
1- WOL is not supported for the My Cloud Mirror, only for the EX2.
2- You can shut down the My Cloud from the dashboard or using the quick view app, from here you can also enable or disable the drive sleep option. If this is enabled the hard drive goes into standby mode to save power after a designated period of inactivity. For iOS/Android smartdevices you can use the My Cloud app, if your TV support DLNA media server access you should be able to access the files in the My Cloud.
3- I recommend you to contact support for the details on how WOL works for the EX2.
http://support.wdc.com/country/index.asp
4- Both the My Cloud Mirror and the EX2 have the same power requirements.
