It lasted for 18 months. After that, the crashes multiplied and eventually the speed kept decreasing constantly until it reached 3.6 Mbps on a 100 COSMOTE network.
Needless to say, laptops and mobile phones reach over 95 Mbps.

I don't know if the fact that it is excessively small plays a role, but it is very unstable and slow. I bought it because the internet speed was advertised as 200 Mbps, while my previous one only reached 100 Mbps. Unacceptable. The internet became very, very slow. I did a speed test and it reached 150 Mbps, then I did it again and it reached 20 Mbps, then it reached 80 Mbps directly, ...20... 50... I went back to the old one.

Absolutely satisfied with its performance (around 1000 hours/year) for use on desktop PCs with operating systems: win98 - win7 - win10 in office applications and with a distance of 2-3 meters from the wifi source without obstacles.

MY POSITIVE OBSERVATIONS
01. Very easy installation.
02. It has never overheated.
03. It has never disconnected.
04. According to my wifi source, it does not cause any problems in streaming Netflix - Youtube in Full High definition.
05. It successfully works with multiple net-metering applications.
06. Simple, beautiful, yet sturdy construction.

THE OBVIOUS BASED ON ITS CHARACTERISTICS
01. For applications that require high speeds (file transfers/downloads over 10Gb, watching 2k or 4k movies, games that require high resources), it may be insufficient.

The packaging says Linux ready. The 5ghz doesn't work. It's okay for single band, but expensive. The choice was made for the 5ghz which ultimately doesn't work properly. I have no opinion on Windows.

The construction is a bit shoddy. This epoxy that it has all around cuts your hand and if you have it for laptop use, it's not the best.

Update for Windows:

The 5ghz downloads at 400klb.
The router is the vr400, so they should be perfectly compatible with each other. Money wasted

This adapter does not work with macOS. Installing the drivers caused my MacBook to freeze and I had to delete them in safe mode. Do not buy it if you use a MacBook. The tragic thing is that in the advertising image, the person holding it has a MacBook. Tragic. I don't have an opinion on other operating systems, but for macOS it is completely useless.

The only negative thing I can say is that it heats up. Otherwise, it's fine. Good range and no disconnections for me. (None in a month of use)