Hercules Stands HCDG-400B Laptop Stand

Strong, rigid and very portable when folded but not as stable as expected. The problem is that one leg is shorter just a couple millimeters than the other (that is probably because of the folding mechanism) and this makes it wobble when put on a very flat surface, like a desk. I thought this was a defective unit but when I looked it up it turned out that other users have the same problem. I had to tape an adhesive pad under the shorter leg to make it stable and this is how I use it so far.