Product review (4 stars): but I was not comfortable with just connecting the drain lines from the dishwasher ...
I have not seen any real installation instructions for this, not that it's difficult to install, but I was not comfortable with just connecting the drain lines from the dishwasher to this adapter with the hose clamps.  In order to get everything tight i inserted 1/2" copper coupling connectors into the adapter and then pushed the drain hoses over the adapter and tightened down the clamps.  Without the pipe in the adapter the clamps would get tight, but you could still easily pull it apart, with the pipe everything is tight and even if the drain hoses get hit under the sink, i'm not concerned with them coming loose.