Mounting frame for 2.5 "drives in 3.5" Bays there are many. Most have the disadvantage that the terminals are in the wrong place at the end - could not care less for PCs with free-floating wiring. But if one has a computer with plug-in system for the hard disk (such as an Apple Mac Pro), then you need the connections to standards at the correct site. This is one of the very few adapters that work then.
My frame was incidentally Kingston defective upon delivery, and I had already thrown away the bill. Therefore, I've ordered the same again a - out of print leather, I got the last. So I came up on it, that there are exactly the same product even under the brand name Icydock here at Amazon: Icydock 2.5 inch to 3.5 inch SSD / SATA Converter