It does exactly what it says.
I used it with offline Windows transfer via bootcd and it was recognized normally

Excellent product! It is very convenient for us technicians, it has fast speeds and doesn't take up much space!

I also encountered connection/disconnection issues, which may be a manufacturing problem. I had to insert another USB object (in my case, it was a mouse) to stop the continuous connection/disconnection. When it managed to connect, it had a very good speed of 180GB in 4 hours.

It does its job, but it was not immediately recognized by all the USB ports of the laptop (2022 model with Ryzen 5300u processor). Only worked properly when connected to a USB 3 port. I would not buy it again...

The best purchase I have made. The data transfer is extremely fast since it is indeed USB 3.1 and it is portable above all. It's like having an M2 NVME hard drive instead of a regular USB stick. With one move, I have a lightning-fast 2TB plug and play hard drive anywhere, on mobile devices, computers at home, work, and with friends. However, pay attention to the formatting of the hard drive. If you format it as NTFS, some older devices or older mobile phones will not support it, and then you will say that your device does not recognize it. The same goes for ExFat and Apfs. Think about the usage you will make and decide on the formatting from the beginning. Read an article if necessary, do not blame the device, which is simply circuits and gates that transfer data. And one more caution about how you insert and remove the M2. If you do it carelessly, you will damage the pins of the hard drive and it will be useless afterwards. Yes, we are converting an M2 NVME hard drive into a portable one, but changing the drive is not a game. Once we insert the drive, we screw it in and that's it. Then, insert and remove the USB, not screwing and unscrewing, and insert another NVME.

Usually the computer doesn't recognize it directly (tested on 3 different computers and on various USB 2 and 3 ports) and you have to unplug and plug it back in 2-3 times until it finds it, which I wouldn't recommend for a disk that is not designed for this use, but I managed to do the job I wanted anyway!

I used it in combination with the https://www.skroutz.gr/s/16602122/Intel-660p-SSD-1-0TB-M-2-NVMe-SSDPEKNW010T8X1.html to upgrade a Dell XPS 13 9360. The combination worked perfectly fine.