It does what it does without any issue.
I'm writing this review as a personal non-paid review. I bought this product for my own personal use.I bought two of these to upgrade my old pc and laptop to ssd, i decided to go for m.2 format in order to use these in future for other systems where the m.2 slots will be integrated in the motherboards.These adapters are passive, so you can only use sata m.2's on them and connect them to regular sata interface or put them directly inside a laptop or even an external enclosure.My laptop is limited to sata ii speeds so it was the limited factor to test this but it served as good compatibility test also. The m.2 was a samsung 850 evo 500gb sata iii. The drive saturated the sata ii interface to it's knees. I was getting around 280mb/s read and 260mb/s write well below the ssd capability of 540/520 mbs nevertheless the adapter worked perfectly and i has all things you need to install the m.2. So it wasn't an issue at all and the drive fit's perfectly in the laptop without any issue.In the pc, the pc is sata iii capable so i was actually having the full speeds of the ssd, and i didn't expect anything strange as this is just a passive adapter again, just to use a simple sata m.2 drive in a 2.5" form factor.Speed were as expected also, there's nothing here to say i was getting the full speed of the m.2 sata.. Iirc it was 548/524 mb/s.The m.2 drive has plenty of space to breath, even when using a full length one like mine, the drive stayed well within the physical dimension of the 9mm 2.5" drive.The only issue with this adapter is the hard edge's you must be careful not to injure your self with this adapter.