If one uses the forum search feature, magnifying glass icon upper right, they’ll see the issue of the missing shutdown button with the v2.x firmware single bay My Cloud units has been discussed at length with several options to shutdown the My Cloud.
The easiest is to install the WD QuickView program (http://support.wdc.com/downloads.aspx?lang=en) which has the option to shutdown the v2.x My Cloud.
Here is some past discussion (there is more) on the lack of a shutdown option within the Dashboard on v2.x single bay My Clouds:
https://community.wd.com/t/safe-shutdown/147307
https://community.wd.com/t/how-to-safely-shutdown-mycloud/155265
https://community.wd.com/t/missing-shutdown-button-and-no-hibernate-option/169745
https://community.wd.com/t/what-happened-to-the-shutdown-option-on-the-dashboard/173677
https://community.wd.com/t/where-is-my-shutdown-button-in-admin-panel/175229
