Tripp Lite Mini Bluetooth USB Adapter 4.0 (Class 1), Up To 164ft Range, 7 Devices (U261-001-BT4)

I've got this for my Home Assistant setup running on a RB Pi 4 and it works fine, the dongle immediately detected by bluetooth show command without loading additional drivers. The Pi's own bluetooth has a very short range. This dongle has a much wider range. My Pi is hidden inside the kitchen cabinet and it can still reach my outdoor BLE sensors from Xiaomi in the garden (soil & humidity testers and temperature sensors).

If your computer does not have built-in blue-tooth for your wireless peripherals (headphones, webcams, etc), this device may be just what you're looking for. Easily plugs into a standard USB port. My wireless headphones work perfectly with this little dongle.

I have had several other Class 1 Bluetooth USB transmitters in the past. This one does not make the specific claim to be Class 1 and in fact only states that it supports about half the range of a Class 1 transmitter. That being said it performs comparably in my work environment. I work in a large cube environment, so it is not completely unobstructed but I mount the USB adapter over the top of my cube wall and I can get close to 40m transmission distance before the sound on my headphones start to break up. It is a little weaker than other transmitters that I have had going through walls but in general seems to perform very well. I use this adapter with a Windows 10 computer and it was plug and play. I did not have to install any special drivers or software. It looks like it comes with Blue Soleil software which I have tried to use in the past with other adapters and I cannot recommend the software. The adapter works great without it under Windows 10.

Finally got it working in Windows 10. Use the included CD and do not download anything from their site. If the installer tells you there is a new version of BlueSoileil, do NOT update! The downloads on their site seems to be a scam. The download link itself is hidden behind a registration wall. Once you get past that they try and make clueless users pay $20 for some crapware software called cPhone to get it to work. If you manage to jump through the hoops and install the downloaded version (make sure you uncheck cphone!), it wont even work and has many of the features disabled or missing that are standard for the BlueSoileil version that is included on the CD.

Did not work without modification. Product may state that it's Windows 7 compatible, but you'll have a few mismatched USB device issues to sort out. If you manually change the drivers for each one to a Microsoft Enumerator they will work fine, and won't give you errors. I have not experienced a smooth file transfer processes with this device. My HP BT adapter supports a wide range of BT abilities, and just works. I would probably not buy this one again, but eventually it did "do what I bought it for."