Good product and plug and play. I would like a bit more power, for better performance with the walls in between.

I have used it for wireless headphones on the PC and it works flawlessly.
UPDATE 25/10/2025
Thanks to user singx23 for the driver link.
In my case, with the top-notch Soundcore Space One for sound, yes, it connects to Win11, but the microphone does not work. With the BRLink program, the microphone does work, but the sound in both the headphones and the microphone is unacceptable, because they switch to Mono, which is necessary for the microphone to work! So, it's a pointless gift!

I bought the adapter to connect 2 PlayStation 4 controllers to play on the PC. At first, it worked, but sometimes there was a lag.

Now they barely connect; when they do connect, there is such a huge lag that you can't play. There is also an issue with connecting; it doesn't find the controllers and does whatever it wants.

So if you want to buy it to play via Bluetooth with controllers, forget it, it doesn't work. At most, you might listen to some music, and that's it

works as it should
I didn't expect the range to be 20 meters! I use it for speakers: at 6-7 meters it's fine, after that it struggles but there are also obstacles on the desk.

On Windows 10 it worked immediately and stably, without the use of additional drivers. On Linux where I mainly wanted it, unfortunately, it never worked. Five stars for Windows only

It is distinctive and does its job effortlessly. It has connected to headphones, mobile, and has transferred files without any problem.

I haven't tried sending or receiving anything yet, but I did test the device discovery and it finds devices and also shows up on others...
On Win7, it recognized it right away, but using it was a bit difficult through the control panel...
The experience became easier with software from Baseus...
The icon appeared, and I was able to hide the device when not in use...
I'm also including the relevant link...
https://cdn.baseus.com/admin/firmware/BA04-Driver.rar
There are some Chinese characters in the file, but that's okay; instructions and installation are relatively easy for someone who knows a little...
I forgot to add that the manufacturer seems to be Barrot and the software is Brlink...

It works perfectly, connected and worked directly on Win 11 on a skylake computer. I mainly connect QCY headphones to do work at home and not have cables. No issue with the signal, except for one time it had a momentary interference in the one month I have had it. Using the bluetooth of my laptop in the same space, I had continuous issues. Now everything is fine.

It gave me a little trouble during installation, but after that everything was fine. It didn't work plug n play, but I had to install something from the website.

I got it for my wireless mouse for my computer. I can say I am satisfied and with very high speed

I got the Baseus EZ10 headphones and I liked them so much that I prefer to listen with them on my desktop pc win10. You plug it in and it plays immediately plug and play and it is very stable and without delay IF you put it close. In the back ports of the unit (on the floor) the headphones have interruptions while in the front port and on the usb hub in front of me they work fine. Connected to the mobile, you have to turn off the BT to connect to the pc and vice versa to turn off the BT on the pc to connect to the mobile. The pc automatically detects the headphones every time, on the mobile you need to connect every time. For its 5€, I am satisfied.
edit: whoever has it, must definitely download the drivers from the baseus website, the difference in volume and sound quality transmission is great and it also has additional tools, but it takes a little to adjust some things to be automatic.

I bought a Baseus BA04 to connect headphones of the same brand to my desktop PC at home and at the office. Both PCs have Windows 10 and no installation was needed. Windows recognized it immediately. The first connection with the device (in my case, the headphones) had to be done manually. The next times everything happens automatically. After 3 days of testing and about 8 hours of use, I can say that there were no interruptions and no synchronization difference between what I saw and what I heard. The range I tested was 9 meters (with one wall in between) and there were also no disconnections.

First update. After a few months of use, the range seems to have dropped significantly. In the same space and at a distance of 5 meters, it starts to cut out when I listen to music with the headphones and sometimes it loses the connection completely. Time to move on.

After years with a decent esperanza, I decided to go for something better.
1. It is not plug n' play on Windows 11.
I installed the drivers from the baseus website.
2. It did not pair with any of the devices that were on the computer. I had to do it separately for each one from the beginning through the application that comes with the drivers.
3. It does not automatically activate with the start of Windows. I have to do it myself every time.
4. Many times it does not connect with the devices right away. There was a time when I had to remove one and pair it again.

After 3 years of use, I think it deserves an excellent rating.
Initially, I had given it a 4 because at first it did not install directly into a USB port. And maybe I can say that I have noticed interruptions with devices if it is connected to the back of the computer or when there are obstacles.
But overall, it is very reliable. It connects simultaneously with many devices (2-3 Bluetooth mice, headphones, etc.), operates continuously, reads them correctly, and generally for such a simple piece of hardware it has made things much easier for me.
Highly recommended, 100%.

The Adapter is quite good, as soon as I connected it, it displayed the Bluetooth tray icon on my PC and I managed to connect my headphones. What concerned me is that because my PC is a bit far from my desk (1-2 meters), I had to get a USB extension to have the adapter next to my desk. Not the best range, but it's worth it if you have your PC at your desk.