Couple of issues...
The adaptor does not look like the picture in the description. It is much different. Its a standard adaptor with a DC wire unlike the one shown in the picture which has an AC and and DC cable.
The adaptor has a design problem. The DC pin which inserts into Google Home is longer in length as compared to the original pin. This makes it protude outside from the base as a result the Google Home does not stand flat. This is a problem. 3 Star for this.
Otherwise the adaptor works fine and powers on the Google Home.