The card I purchased was compatible with the HunRun logo. I encountered two serious problems with it, of course the e-shop kindly told me to return it for a replacement, but I preferred to share my experience with skroutz consumers.

Initially, I noticed that it had smaller shield pins and it made contact with the USB port of the Arduino Uno R3 when inserted. In order to use it, I had to put an insulator on the top part of the USB socket to avoid short-circuiting when connecting the card.

That was the easy part, as I then put it into operation and all the indicators lit up correctly, and of course the software libraries were loaded correctly, but there was no connection to the local network. Searching on the internet, I saw that there were other "smart" people like me who purchased a similar network card for half the price. In this YouTube link https://youtu.be/3n73k1HzKLo, they found out what the problem was and provided the solution shown in the photo. The manufacturing company did not use the correct terminal resistors during the production of the board and released this defective batch into the market, from which some "unfortunate" consumers bought. By adding two resistors of 75Ω..100Ω (see photo) directly under the RJ45 port, everything is restored and the network card works properly with correct termination.

If you don't have experience with a soldering iron, don't choose it, get the original one. I made the modification and it has been functioning normally for a week now.

I do not have the official implementation of the shield so I cannot compare the two. However, I can say that it worked flawlessly with the Arduino examples from the corresponding library. It also works without any issues, for a few weeks, for the implementation of the UDP client. The soldering and components may be inferior, but they definitely function. As for how long they will last, we will have to see in practice. However, for approximately 1/3 of the price, it is definitely worth it.