I bought this product because my previous stopped working (or not) SATA connection. We must not forget that this product, focused for troubleshooting to verify your DD, is sold without food (a cable is supplied but no power supply) and as part of a 3.5-inch HDD in the format, you will have to "pull" an external power supply (rather looking for a similar product natively with a power supply, in my case, I use the power of my previous product). Test with a 3.5-inch SATA HDD ok, with a 2.5 inch PATA HDD ok. The product filled its function.