TP-Link USB Bluetooth Adapter for PC, Bluetooth 4.0 Dongle Receiver, Plug & Play, Nano Size, EDR & A2DP Technology, Supports Windows 11/10/8.1/8/7/XP for Desktop, Laptop, Keyboard, etc (UB400)
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Availability:
Only 10 left in stock, order soon!
Arrives
Tuesday, Jun 23
Style: UB400
Features
- Bluetooth 4. 0 - Applies the latest Bluetooth 4. 0 and it is backward compatible with Bluetooth V3. 0/2. 1/2. 0/1. 1. UB400 turns Non-Bluetooth PC or laptop into Bluetooth-capable
- Plug & Play or Free Driver - Plug and Play for Win 8, Win 8. 1, and Win 10. Supports Win7/XP (Driver required for Win7/XP and could be downloaded from website free of charge). It is NOT compatible with Mac, Linux, TV
- Nano-Sized - A sleek, ultra-small design means you can insert the nano adapter into any USB port and simply keep it there, no matter when you are traveling or at home
- Reliability - Enable wireless communication with Bluetooth-enabled computers, printers, phones and headsets. Utilize Bluetooth Low Energy(BLE) technology for energy-saving wireless connectivity
- Broad Operation Range - With a transmission distance of up to 65 ft, you can enjoy lossless music via your Bluetooth headset without hovering around your computer
- Worry-Free Customer Support & - Industry leading 24-month and free lifetime 24/7 technical support
Description
UB400 is highly portable and much smaller than a flash drive. Plug and play in win8/8.1/10/11 systems to enjoy a wireless communication with Bluetooth- enabled devices. ub400 supports advanced Bluetooth 4. 0 and enables wireless connectivity a wide range of devices such as computers, printers, phones, headsets, speakers, keyboards, controllers, etc.
Brand: TP-Link
Hardware Interface: Bluetooth
Color: Black
Compatible Devices: Desktop
Product Dimensions: 0.74"L x 0.58"W x 0.27"H
Data Link Protocol: USB
Data Transfer Rate: 480 Megabits Per Second
Item Weight: 10 Grams
Unit Count: 1.0 Count
UPC:
Hardware Interface: Bluetooth
Compatible Devices: Desktop
Data Link Protocol: USB
Data Transfer Rate: 480 Megabits Per Second
Compatible Operating System Family: Windows
Minimum Required Operating System Version: Windows 8
Item Dimensions L x W x H: 0.74"L x 0.58"W x 0.27"H
Item Weight: 10 Grams
Color: Black
Brand: TP-Link
UPC: 840460604802 845973099664
Global Trade Identification Number: 64
Manufacturer: TP-Link
Mfr Part Number: UB400
Model Number: UB400
Unit Count: 1.0 Count
Warranty Description: 2-Year Warranty
Built-In Media: Bluetooth 4.0 Nano USB Adapter UB400, Quick Installation Guide
Item Type Name: bluetooth adapter
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jun 23
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: UB400
Tiny, Reliable, and Plug-and-Play Bluetooth for Any PC The TP-Link UB400 Bluetooth 4.0 adapter is a remarkably simple way to add Bluetooth to an older desktop or laptop that lacks it. It’s about the size of a fingernail—once plugged in, you can leave it there permanently without blocking adjacent USB ports. Setup is as easy as it gets: on Windows 10 or 11, it’s fully plug-and-play; for Windows 7 or XP, TP-Link provides free drivers. In my experience, installation took seconds and devices paired immediately. Performance is solid for its class. It maintains stable connections for headphones, mice, keyboards, and even game controllers within a reasonable 50- to 60-foot range. Audio quality over A2DP is clean, and latency with Bluetooth 4.0 peripherals is minimal for everyday use. It’s not built for high-end audio streaming or gaming headsets, but for standard wireless accessories it works seamlessly. I especially appreciate that it’s low-profile, energy-efficient, and doesn’t run hot even after hours of use. The connection is consistent, and it automatically reconnects to previously paired devices after reboot—no fiddling required. Bottom line: A dependable, compact, and truly plug-and-play Bluetooth dongle that delivers excellent value for basic wireless connectivity. Ideal for upgrading desktops or travel laptops, and proof that simple, inexpensive tech can still work perfectly.
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Reviewed in the United States on October 8, 2025 by Everyday Reviews
Style: UB400
Product: TP-Link USB Bluetooth Adapter for PC Used for: 3 years and 2 months Key Features: – Compact size takes up minimal space in a USB port – Stable connection with no noticeable drop-offs – Extremely easy to use—just plug it in and it works Ratings: Quality: Excellent build quality and durability. After over three years of use, it still works flawlessly with no physical or functional issues. Rating: 5/5 Performance: Pairing reliability has been great, with no connection problems in my use. Speeds are fine for general Bluetooth tasks, though I haven’t tested the full range. Rating: 5/5 Value: Slightly pricey compared to some alternatives, but it does its job very well and has proven to be dependable over the long term. Rating: 4/5 Pros: – Compact design that’s unobtrusive – Stable and reliable connection Cons: – A bit more expensive than similar adapters Summary: The TP-Link USB Bluetooth Adapter for PC is a rock-solid choice for adding Bluetooth functionality. It’s compact, easy to set up, and has been reliable for over three years of use. While it costs a little more than some options, the long-term dependability makes it worth considering. Overall Rating: 5/5 Disclaimer: This review is based on my personal experience using the product. I'm not an expert—just sharing my honest thoughts to help others make an informed decision.
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Reviewed in the United States on August 11, 2025 by Jason
Style: UB400
If you are looking for an adapter that support pass-through in Dolphin, this one does! Tested with Dolphin 2603a in macOS Sequoia with original controllers and after market controllers. Audio worked on both cases too. It was detected on the first run, Dolphin offered to download the necessary firmware and it was good to go. The connection is super stable with the original controllers, not so much with the aftermarket ones but I suspect that is a controller issue and not an adapter issue.
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Reviewed in the United States on May 13, 2026 by Diegus83
Style: UB400
UPDATE 2 - 7/8/21 So in the time since I originally wrote this review (and it's update) I have found this adapter can work quite well and some of my early experiences with it were probably due to the limitations of Windows 7. One very key discovery I made is that if you just stick this into a USB port on the back of your PC, you will get OK reception if you're close but you'll get very spotty connections from any distance at all (and might even get dropouts from as close as across the room the PC is actually in). What I have done is used a USB extension cable and mounted it high on the wall (not the prettiest thing in the world but it works wonders for the range). Once that was done, I was definitely getting more range and a much more reliable connection throughout my apartment. It's not Bluetooth 5.0 but it's not bad for the price. I was looking to upgrade to Bluetooth 5.0 recently but most of the 5.0 dongles they have on here have mixed reviews so I ordered another one of these as a spare. END Update UPDATE - 7/13/2020 So, I originally found the Windows 7 driver that I downloaded that is supposed to work with this adapter installs and appears to work on Windows 7 but I could not get it to work with anything I tried (This adapter is plug and play with Windows 8.1) Eventually, I uninstalled the driver, went into Device Manager and clicked for it to scan for hardware changes. So it found the adapter and (of course) displayed the error triangle that told me there was no installed driver for it and THEN it went online and found a driver for it and installed it and now it works with Windows 7 as it should. So if you have Windows 7, I recommend you try that BEFORE you bother with the driver they tell you to download for it. It's much simpler and it actually works with my system and doesn't require installing anything extra. END UPDATE -------- Original Review I bought this for my Windows 7 PC on the promise of a driver download that would make it compatible. So I downloaded the driver and found it to be very confusing and barely functional So I tried it on a Windows 8.1 PC and it was plug and play (as it's supposed to be). I guess it's fine for Windows 8 and up. If you have Windows 7, expect to have to fight with it to make it work. I have also had an issue with low volume on Bluetooth devices I'm sending audio to with this adapter but I'm not sure I can blame it entirely on the adapter so I'll leave it at that. For example, I have a stereo that has built-in Bluetooth and I can barely hear some Youtube videos with full volume on my PC and the stereo. That stereo goes plenty loud if you're using the radio or the CD. Turned up all the way it should be louder and just isn't. Maybe it's something I'm doing wrong but if it is, it isn't obvious.
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Reviewed in the United States on January 21, 2020 by Brian
Style: UB400
This little dongle has been in my PC since acquisition and has worked flawlessly and without as much as a disconnect. It just works without any fuss. You can't go wrong.
Reviewed in the United States on April 20, 2026 by S. Swanner
Style: UB400
I have a Lenovo Yoga laptop I bought in 2020 for college that has been nothing but a headache. Recently, the Bluetooth hardware completely failed and it would’ve required an extensive (and expensive) repair to get the hardware replaced. I use Bluetooth headphones to attend class lectures, and the laptop would’ve required another adapter to add an aux port to even try to use wired headphones. This little USB gadget fixed my problem for $10. Install was quick, easy, and done in about 5 minutes. I was concerned this would require some 3rd party Bluetooth menu to connect, but my laptop recognizes this adapter as a native Bluetooth drive, with all settings available via the same menu as before. The only small snag I had was that my Bluetooth devices wouldn’t connect until I removed and re-paired them in the settings menu, but they reconnected on the first try and now work flawlessly. You’ll need the model and version number to find the right driver to install. You can find the model number on your product packaging or this product listing under the “Product Specifications” section. The version number is printed on the bottom of the USB adapter itself.
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Reviewed in the United States on September 11, 2024 by Brittany
Style: UB400
As far as I can tell, this FOB does not support a Windows XP machine. The setup won't run at all due to compatibility issues, and my attempts to manually install from the driver files were not successful. It may very well be a good Bluetooth adapter beyond that, but the Amazon description should be modified to reflect that only Windows 7 and newer are compatible.
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Reviewed in the United States on May 26, 2026 by Lunarsight
Style: UB400
We purchased the TP-Link USB Bluetooth Adapter (UB400) and we are really impressed with its performance! Here are the highlights: Easy Setup: The plug-and-play feature made installation a breeze. We simply plugged it into my USB port, and it was ready to go in seconds. No complicated drivers or setups needed! Compact Design: The nano size is fantastic. It’s small enough that we can leave it plugged into the conference room computer without worrying about it getting bumped or damaged. Strong Connectivity: The Bluetooth 4.0 technology provides a stable connection for all of our devices. The range is good, allowing us to move around without losing connection. Versatile Compatibility: It supports a wide range of devices, including Windows 11, which is great for future-proofing. Quality Audio: The EDR and A2DP technology ensures that the audio quality is clear and lag-free, making it perfect for in a large conference room. Overall, the TP-Link USB Bluetooth Adapter is an excellent investment for anyone looking to add Bluetooth functionality to their PC. Highly recommended!
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Reviewed in the United States on October 29, 2024 by Speed Global Services