With minor adjustment the adapter worked perfectly.
Due to the connection cable geometry I had to mount the Hard Drive further forward than the adapter allowed. However it was a simple matter to drill some holes in the adapter to receive mounting screws for the hard drive. Having made this minor adjustment the adapter worked perfectly.
This allows you to put two 2.5" drives in a small form factor Dell PC. In my case, I replaced the original 250GB 3.5" HDD with a 250GB SSD for Windows and apps and a 1TB 2.5" for all the rest. Now I have a very small PC mostly for media playback in the living room with both speed and ample storage space.