I bought it to replace a cheaper Logilink extender, which was a disappointment, and I decided to buy this one, as it would work with a TP-Link Archer VR400 V1 adsl modem/router, which I have been very satisfied with.
Its size is smaller than what I expected, seeing the photos, and it fit into a tighter socket, which I did not expect. The connection to the router's wifi was very easy. It can be done in 3 ways: a) through the WPS button (which is the easiest), b) through the TP-Link Tether App, and c) through connection to the wireless network and the address 192.168.0.254. As soon as I completed the connection, the signal light turned red, indicating weak signal and that I needed to place it closer to the router for better strength (there is a relevant tool in the Tether App). The wifi range is very good and at least in my case, it fully satisfied me. Its operating environment is simple, user-friendly, and with plenty of settings (although not enough for an advanced user). It provides a lot of information about the operation of the extender and the router, and has several settings for network operation (especially if used as an access point rather than an extender). It broadcasts on both bands (2.4 GHz and 5 GHz) and supports the 802.11ac protocol. It allows you to have the same name as the wireless network it extends, so that there is one network name for each band (2.4 GHz and 5 GHz) throughout the house, instead of two (however, in this case, the signal strength is slightly reduced, especially in the 5GHz band). However, you can also give it any name you want, different from the name of the router's wireless network. Additionally, you can set a schedule for when it turns on and off (power schedule) by hours or days of the week, while it allows you to set times for the four blue LED lights it has to turn off, so as not to be bothersome (especially if it is placed in a bedroom). TP-Link has good support and has already released two new firmware updates. The upgrade was done easily without any problem. As for its operation, it is very stable, unaffected by router restarts, so it reconnects immediately without any problem. In case of its own restart, it does not lose the settings.
Overall, I did not notice any problem or instability. The network is very stable, reliable, and has not crashed. Because I have been previously troubled with extenders and routers, this one simply works as expected. It does not bother you during setup, you make the simple initial settings and it immediately works. Of course, you can customize it further and tailor it to your needs, but it still operates just as reliably. It seems to be worth its price and works perfectly with the TP-Link adsl modem. The big positive for me is the operation of the 5 GHz band, which is excellent. I recently started working on the 802.11ac protocol (exclusively on the 5 GHz band). Even though the computer is in a remote location, it still connects to the extender normally. The signal is not as strong as that of the 2.4 GHz band, but it has much less noise and significantly greater data transfer rate (even though I usually get around 200-300 mbps from a distance, which is a huge difference compared to the 2.4 GHz band). Overall, I noticed significant differences in speed regarding this protocol, especially in file transfer within the network: noise at 9-14% and a very stable signal (about 50%), although it is low without fluctuations. Generally, even though the 5 GHz band has a shorter range and weaker signal (does not easily penetrate walls) compared to the 2.4 GHz band, it offers a much larger data transmission range, making it the preferred choice, especially if your computer supports the 802.11 ac protocol. Specifically, if you need to transfer files on the network, it is the best choice even with a 30% signal. The network and connections are very stable, even after restarts, the extender connects instantly. If you don't have major signal range issues, prefer the 5 GHz band (either in n or ac). It is worth noting that I have used the extender with both a new computer and two old laptops from 2008 and 2011, considering the age of their wireless network cards.
Advanced users may want more settings and customization, however, the average user will be fully satisfied with its functionality, simplicity, reliability, and capabilities. TP-Link offers a 3-year warranty. Overall, it has left a very positive impression on me, comparable to other products from the same company.
UPDATE 7-3-2023: This specific extender has proven to be excellent! I have no complaints whatsoever. I have not experienced any disconnections during this entire period and have not had to reconfigure it. I had used it for a period of two years as an access point connected with a cable to the router, but now I have moved it to my sister's house where it works as a wifi extender without any issues. It is a reliable and immortal worker. A very honest purchase!