Decided to edit this review because Vantec customer service is awesome. They replaced the 2 units that broke during install. I'm a big fan of these carriers - you can clip drives into the carrier quickly and easily without screws. The trays are very simple which makes swapping drives fast and easy. I had the original SATA II version. This version officially supports SATA III so I upgraded all of my old units. Or at least I tried to - 2 of 6 broke during install, but Vantec customer service replaced them. Compared to its predecessor, they got rid of the blue LED that the old units had - they lit up so you knew you had power and blinked when the drive was accessed. I consider this a wash because you have less info when things aren’t working, but you also have fewer blinky things which can be annoying sometimes. Those old blue LEDs were so bright that they were a bit distracting. My biggest complaint - it's the SATA data and power connectors. SATA cables that have clips won’t clip into them so they’re not as secure as they could be. The older units were like this too and I never had a problem with them, but I guess I’ve gotten used to devices supporting clips over the years. The bigger issue is that the connectors are exposed at the bottom of the chassis - they're not enclosed like on pretty much any other device out there. This is a big deal because the exposed bottom allows the cable to twist downward if there is any pressure on the cable. This puts torsion on the a flimsy plastic tab inside the SATA connector which then breaks. I lost 2 of 6 units that way during install. This isn’t an issue on most SATA devices because when the connector is enclosed, the bottom prevents the cable from twisting within the connector. It would be great if Vantec could address that in future iterations of the device. Until then, be careful during install. The drive is meant to go into a 3.5" drive bay, but the 3 holes on each side of the chassis don't align well with floppy drive mount points - at least in my chassis. In my cases, (all Chenbro 43200) only 1 out of the 3 screws on each side would align with the 3.5" holes, but that’s enough to keep things in place. The chassis is plastic so I could very easily fix this with a drill if I felt like it was necessary, but its good enough for me for non-commercial use. Overall, these are super simple and useful carriers which is why I keep buying them. There are much nicer carriers out there but there is something to be said for the simplicity of this solution. A little disappointed with the exposed connector, but that issue won’t affect everyone and can be mostly mitigated with some extra care during install. Very happy with their customer service.