








🔗 Tiny Tech, Massive Connectivity — Stay Linked, Stay Ahead!
The TP-Link UB4A Nano USB Bluetooth Adapter delivers Bluetooth 4.0 with low energy technology in a sleek, ultra-compact design. It supports Windows 7 through 10 with driver-free plug & play installation, ensuring broad device compatibility and reliable long-range connections. Perfect for professionals seeking a discreet, high-performance Bluetooth solution that keeps their workspace clutter-free and their devices seamlessly connected.





| ASIN | B07YLDVM6B |
| Best Sellers Rank | 1,069 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 6 in Bluetooth Network Adapters |
| Box Contents | UB4A |
| Brand | TP-Link |
| Brand Name | TP-Link |
| Color | Black/White |
| Colour | Black/White |
| Compatible Devices | Desktop |
| Compatible devices | Desktop |
| Country of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 12,650 Reviews |
| Data Link Protocol | Bluetooth, USB |
| Data Transfer Rate | 3 Megabits Per Second |
| Data link protocol | Bluetooth, USB |
| Global Trade Identification Number | 06935364053307 |
| Hardware Interface | USB |
| Hardware interface | USB |
| Item Dimensions L x W x H | 15L x 7W x 19H millimetres |
| Item height | 1.9 centimetres |
| Manufacturer | TP-Link |
| Product Warranty | 1 year manufacturer |
| Product dimensions | 15L x 7W x 19H millimetres |
| Unit Count | 1.00 count |
Z**C
Brillaint, works as intended
Why did you choose this product over others?: I trust TP Link as a brand for their reliabilty and functionality. As the intended use was for a laptop, the nano sizing was descrete enough to leave plugged in the laptop without looking out of place and without being too big that it didn't get knocked and broken. Ease of installation: Simply plug in and download driver. Was simple and only took a few minutes to install. Speed: The network speed of the laptop was rubbish being an older style laptop now with this plugged in getting download speeds around the 400mbps with 150mbps upload.
M**T
Tiny, but good distance and good for old devices. Works with Ubuntu (Linux).
Very small. Used with Ubuntu 24.04 on a really old laptop to connect to an old Bluetooth creative speaker. It works out of the box and over 20ft away. Ubuntu installed it with no need for user interaction. 5 stars from me
R**E
This works well, but beware as I found that my Win 10 (Ver 1909) has gap in Bluetooth support
There is nothing wrong with the product itself, and it ought to work well in plug and play with native drivers IF windows 10 Bluetooth support didn't let it down. That's apparently no fault of this product, though, so I haven't marked it down, and there is a workaround. 1) WHAT HAPPENED TO ME USING WIN10 PLUG AND PLAY: Product installs immediately. All drivers present and correct. Paired an audio speaker successfully. But wouldn't play, and in sound control panel it persistently said the device was 'disconnected'. The internet is absolutely full of people reporting exactly the same problem, and loads of suggested "solutions" that simply don't work - I tried most if not all of them! After further research - likely cause is that it seems until Win 8 Microsoft left it to hardware device suppliers to provide their own Bluetooth stack software, but from 8 onward Microsoft implemented a plug and play driver solution within windows itself. But this is inadequate/incomplete in some respects and they are currently working on completing it - no immediate solution therefore unless manufacturers provide 3rd party drivers. HOW I SOLVED IT EVENTUALLY: TP-Link claim to provide pre-Win8 drivers for the UB4a but the link on their website doesn't lead to drivers! However they often talk about UB400 at the same time, and UB400 does offer a driver in the support page for Win 7 and below. I decided to risk trying it with this product on Win 10. Result: it installed perfectly first time and the product now works with devices exactly as expected. You just have to right click the Bluetooth icon in the notification area to gain access to the Bluetooth functions, as obviously this software predates win10 and is not integrated into the win10 native bluetooth interface. The driver software is badged as "CSR Harmony Wireless Software Stack" and although it is a bit long in the tooth, it is a perfectly acceptable substitute until Microsoft get round to finally fixing their inbuilt bluetooth software stack driver. UPDATE: I need to revise the above having just taken delivery of super Bluetooth Headphones which I've reviewed elsewhere. These DID connect to this product when using Win10 plug and play mode without any additional driver. My previous attempts had been with an older Bluetooth cube speaker. So, as other reviewers have said - you might be lucky with plug and play. Seems this may depend on newness of Bluetooth item to be connected. Or, probably for older Bluetooth items, you may need to resort to the older driver as described above. I guess it is down to Windows not recognising/supporting older products - another example of software-driven product obsolescence keeping landfill busy and manufacturers happy. Well I don't give in that easily! My Bluetooth cube speaker lives to fight another day.
S**3
Drivers for Win 11 worked fine but on a Win 7 PC had real problems. pls read
I live in the UK, our old copper phonelines are being switched off in 2025 and fibre will be the only option. My main PC (Win 11) and back up PC (Win 7) are in a different room to the fibre router. My Win 11 pc has a wifi card so can connect via wifi but the Win 7 machine has no wifi card. I was looking for a quick and cheap solution so tried the AC600 nano. First I installed the drivers on my Win 11 machine and the adapter worked perfectly. Not so with the Win 7 machine, it would not install the drivers as it was saying they were not digitally signed. After hours of trying various solutions from various sites on the web which did not solve the problem I found a quick and easy solution. There is a downloadable tool from the web, it's called SamFw.com FRP tool. I downloaded this, installed it then clicked on the misc tab and there there is an option to disable driver signature enforcement. Click this then reboot your PC and the drivers will install. If you click the other option enable driver signature then the TP link drivers will not load so don't do that. Hope this helps. After doing the above the adapter works on both machines and receive at only a mgb less than when the PC is wired to the hub.
R**E
awesome bluetooth
simplistic, plug it in and works off the bat, bluetooth device only does not connect to wifi. but i needed it for the bluetooth so awesome ty
M**B
Good enough
I bought one of these for my neighbors PC that needed a Wi-Fi add-in card/dongle. It's not the best dongle but it works as expected however I would make sure it is plugged into a port that isn't blocked by walls or other hardware as the signal strength of this isn't superb but it's not awful
Z**E
Works great with a Mister Pi FPGA
Bought this little wireless + bluetooth dongle to use with my Mister Pi FPGA console as the ones I had in the house just wouldn't work with it. I plugged this in and it worked perfect with no messing or troubles. Definitely recommended for anyone looking for a dongle for a similar use case. The speeds aren't the best but it's very compact, and the price is good for what it is.
A**N
TP-LINK: A trusted brand name
I could have gone for a cheaper dongle but since I will be using this a lot on my PC connecting to pretty much different devices, I could not afford to cut corners. So I went for TP-LINK. I have TP-LINK devices in the house, not to mention the TP-Link TL-WA850RE N300 I bought a couple of weeks back and that is fab! Anyway, my review is based on a Windows 10 environment connecting to a 7 year old Jabra Revo. For those of you who do not know what this is - it is a bluetooth wireless Stereo Headphones with Mic. I normally use this with my phone but since working from home, instead of owning another headset, I decided to make full use of the Jabra Revo headset. A word of advice - never plug the Bluetooth dongle into the your PC via an USB extension cable! A mistake which I have made at first which troubled me. The symptom is that your PC will not discover your bluetooth device in this way. Instead, the dongle needs to plugged in directly into your PC (or laptop). As soon as I did that, the Jabra Revo headset was discovered immediately and connected with no issues. The TP-LINK Bluetooth dongle is small enough not to be intrusive around your PC yet it is powerful enough that the signal could be picked up from another room separated by 2 internal walls, roughly 10 meters away with no degradation to the sound quality. Provided you have enough USB ports on your PC, there is really no need to unplug it at all. I am pleased with the product and how easy it is to set up and connect - even to my rather aged headset! In terms of packaging, I would prefer that this item to be packed in a much "greener" consideration. In my opinion, a lot of the unnecessary plastic and paper could do without. After all, they will end up in the recycle bin. If you are wondering the Bluetooth version of this dongle, I can also confirm that it is of Bluetooth v4, as spec. I have attached 2 screenshot as how to check the version once you have it successfully recognized by your PC. Hope this will help. Notes to the screenshot: 1/ From Window Search box (bottom left), key in "Device Manager" 2/ Right click on "Generic Bluetooth Radio" and select "Properties" from the list (right at the bottom) 3/ On the separate window, click on tab "Advanced" and check the "Firmware Version" (begins with LMP X.XXXX) I have also attached another screenshot for referencing to the Bluetooth version with LMP numbers. Good luck and thanks for reading!
Trustpilot
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