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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, PS4/ Xbox Controllers (UB400)

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Purchase options and add-ons

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
UPC	845973099664
Global Trade Identification Number	00845973099664

About this item

【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

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TP-Link USB Bluetooth Adapter for PC, Bluetooth 5.3 Long Range Receiver, Plug and Play, Adjustable Antenna, Supports Windows 11/10/8.1/7 for Desktop, Laptop, PS5/PS4/Xbox Controller (UB500 Plus)
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This item: 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, PS4/ Xbox Controllers (UB400)

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TP-Link USB Bluetooth Adapter for PC, Bluetooth 5.0/5.3 Dongle Receiver, Plug and Play, Nano Design, EDR & BLE, Supports Windows 11/10/8.1/7 for Desktop, Laptop, PS5/PS4/Xbox Controller (UB500)

$8.59

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TP-Link USB Bluetooth Adapter for PC, Bluetooth 5.3 Long Range Receiver, Plug and Play, Adjustable Antenna, Supports Windows 11/10/8.1/7 for Desktop, Laptop, PS5/PS4/Xbox Controller (UB500 Plus)

$17.99

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Important information

Legal Disclaimer

*Maximum wireless Bluetooth transmission rates are based upon test results under normal usage conditions. Actual wireless transmission rate and wireless coverage are not guaranteed, and will vary as a result of environmental factors, including building materials, physical objects and obstacles. Claimed coverage is based on theoretical testing scenario in an open air environment. **To ensure compatibility, you may need to update the adapter’s drivers after an OS update. You can find our latest drivers in the download center at tp-link.com/en/download-center.

Top Brand: TP-Link

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From the manufacturer

Long Distance Operating Range

With a transmission distance of up to 65 ft, you can enjoy music, print documents, and so much more from your Bluetooth-enabled devices without hovering around your computer.*

Connect Bluetooth-Enabled Devices to Your Computer

UB400 makes Non-Bluetooth PCs and Laptops Bluetooth-capable. Simply plug in the UB400 to wirelessly connect Bluetooth-enabled headsets, game controllers, keyboards, and more.

EDR and A2DP Technology

Featuring EDR and A2DP technology, UB400 enhances your wireless experience by giving you faster speeds up to 3 Mbps for data transfer and better sounds to ensure high-quality audio when streaming your favorite music via a Bluetooth device.

Plug N' Play for Windows 11, 10, 8.1, and 8

For Windows 11,10, 8.1, and 8, just plug UB400 into your computer to enjoy a fast, convenient Bluetooth connection.

Windows XP and 7 are also supported by installing the driver from TP-Link's website*

Miniature Design Bluetooth Card for PC PS4 Xbox

Plug it in and Forget about it

A sleek, ultra-small design means you can insert the nano adapter into any USB port and simply keep it there, no matter where you go.

Can the UB400 support more than one device at a time?

Yes, the Bluetooth adapter can support up to 7 devices at a time.
What operating systems are compatible with the UB400?

a. Current supported operating systems include Windows 11/10/8.1/8/7/XP, driver needed for WIndows 7/XP.

b. Does not support Mac OS and Linux.
How do I install the driver for Windows 7 and XP?

a. To install the driver, visit the TP-Link website, search “UB400” and download the driver in the "Support" section

d. Open file "UB400_Driver.zip", click through the following “Windows” file and click on “setup.exe” and finish the installation
How do i connect to PS4 controller?

Try 2 things,

1. Unpair the controller from your playstation

2. Hook the controller to your computer via the USB cable and then hit the PS Button. Once the controller is detected you can disconnect the usb charging cable.
What is A2DP and EDR technology?

A2DP, a Bluetooth standard that allows for high-quality audio streaming when using Bluetooth enabled devices.

EDR, Enhanced Data Rate, is a Bluetooth specification that provides faster data rates.

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	This Item 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, PS4/ Xbox Controllers (UB400)	Recommendations TP-Link USB Bluetooth Adapter for PC, Bluetooth 5.0/5.3 Dongle Receiver, Plug and Play, Nano Design, EDR & BLE, Supports Windows 11/10/8.1/7 for Desktop, Laptop, PS5/PS4/Xbox Controller (UB500)	Edimax Bluetooth Adapter for PC, BT 5.0 EDR Nano USB Dongle, Fast Transfer, Bluetooth Headphones Headset Speakers Keyboard Mouse, Win 10/11 Plug-n-Play, Linux/Mint 21 Plug-n-Play, BT-8500	TP-Link USB Bluetooth Adapter for PC (UB400), Bluetooth Dongle Supports Windows PC for Desktop, Laptop, Mouse, Keyboard, Printers, Headsets, Speakers, PS4/ Xbox Controllers - Bulk Packaging - 2 Pack	USB Bluetooth Adapter for Desktop PC, Plug & Play 5.3 Mini EDR Dongle Receiver & Transmitter for Laptop Computer for Bluetooth Keyboard Mouse Headphones Speakers Printer Windows 11/10/8.1	UGREEN USB Bluetooth Adapter, 5.4 Dongle for PC, Plug & Play for Windows 11/10/8.1, Bluetooth Receiver & Transmitter for Keyboard/Mouse/Headphone/Speakers/Printer
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Price	$11.99	-43% $8.59 List: $14.99	$12.99	$24.99	-10% $8.98 List: $9.99	-10% $8.99 List: $9.99
Delivery	Get it as soon as Tuesday, Jun 24	Get it as soon as Tuesday, Jun 24	Get it as soon as Tuesday, Jun 24	Get it as soon as Tuesday, Jun 24	Get it as soon as Tuesday, Jun 24	Get it as soon as Tuesday, Jun 24
Customer Ratings	4.458,444	4.518,076	4.3842	4.4233	4.5105	4.3417
Sold By	Amazon.com	Amazon.com	Edimax Computer	Gadgets Directs	LEFUQ	UGREEN GROUP LIMITED
data transfer rate	480 megabits per second	2 megabits per second	3 megabits per second	3 megabits per second	3 megabits per second	—
data link protocol	USB	Bluetooth, USB	Bluetooth	Bluetooth	Bluetooth	—
hardware interface	bluetooth	bluetooth	bluetooth	usb, bluetooth	usb, bluetooth	usb
operating system	windows	Windows 11/10/8.1/7	Windows 10/11 Plug-n-Play, Windows 8; Linux/ Mint 21 Plug-n-Play	Supports Windows 10/8.1/8/7/XP	—	—

Product guides and documents

Installation Manual (PDF)

User Guide (PDF)

User Manual (PDF)

Product information

Technical Details

Collapse all

Summary

Number of USB 2.0 Ports	‎1

Other Technical Details

Brand	‎TP-Link
Series	‎bluetooth adapter
Item model number	‎UB400
Operating System	‎windows
Item Weight	‎0.353 ounces
Product Dimensions	‎0.74 x 0.58 x 0.27 inches
Item Dimensions LxWxH	‎0.74 x 0.58 x 0.27 inches
Color	‎Black
Manufacturer	‎TP-Link
ASIN	‎B07V1SZCY6
Country of Origin	‎Vietnam
Is Discontinued By Manufacturer	‎No
Date First Available	‎July 18, 2019

Additional Information

Customer Reviews	58,444 ratings 4.4 out of 5 stars
Best Sellers Rank	#1,629 in Electronics (See Top 100 in Electronics) #5 in Wireless Audio Receivers & Adapters

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

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What's in the box

Bluetooth 4.0 Nano USB Adapter UB400

Quick Installation Guide

Product Description

UB400 is highly portable and much smaller than a flash drive. Plug and play in
win8/8.1/10 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.Mounting Hardware :Bluetooth 4.0 Nano USB Adapter UB400 , Quick Installation Guide.

Customer reviews

58,444 global ratings

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Customers say

Customers find the Bluetooth adapter easy to install and appreciate its functionality, with one mentioning it works right out of the box. Moreover, they consider it good value for money, describing it as an inexpensive way to upgrade older computers. However, connectivity experiences are mixed, with some reporting seamless connections while others experience connection issues. Additionally, sound quality and compatibility receive mixed reviews, with some praising the sound while others report poor audio, and while it works with Xbox controllers, some customers note compatibility issues with Windows 10 systems. Customers disagree on the lag, with some reporting no noticeable delay while others experience significant lag.

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Functionality Ease of installation Value for money Connectivity Bluetooth capability Sound quality Compatibility Lag

2,543 customers mention "Functionality"1,851 positive692 negative

Customers are satisfied with the Bluetooth adapter's functionality, reporting that it works well right out of the box and performs instantly.

"I plugged it in and it worked instantly—no extra drivers needed on Windows 10!..." Read more

"Plugs in easy and works well. No problems with it. I've had mine for about 3 or more years now." Read more

"It does the job. I use it for a speaker that's 6 feet away and no issues." Read more

"...all expectations – that the purchased UB400 simply and repeatedly fails to work under XP, no matter how carefully TP-Link's installation..." Read more

1,170 customers mention "Ease of installation"969 positive201 negative

Customers find the Bluetooth adapter easy to install, describing it as plug-and-play with good instructions.

"Plugs in easy and works well. No problems with it. I've had mine for about 3 or more years now." Read more

"...Windows Defender or anti-virus interference, installed successfully with neither problem nor difficulty...." Read more

"...Easy , just plug and play. I would recommend to get the newer version." Read more

"...But since we are where we are I said lets try the driver. Driver starts to install and looks like it gets done but it pops a message stating that..." Read more

424 customers mention "Value for money"334 positive90 negative

Customers find the Bluetooth adapter offers good value for money, describing it as a very inexpensive way to upgrade older computers.

"...Definitely a reliable and affordable upgrade for any PC" Read more

"...A great solution for computers which lack bluetooth technology at a low price." Read more

"...It's not Bluetooth 5.0 but it's not bad for the price...." Read more

"...If you’re looking for an affordable, reliable Bluetooth adapter for your PC, this is it...." Read more

970 customers mention "Connectivity"510 positive460 negative

Customers have mixed experiences with the Bluetooth adapter's connectivity, with some reporting seamless and rock-solid connections, while others mention frequent connection issues.

"...It connected quickly to my Bluetooth headphones and Xbox controller without any lag...." Read more

"...both my gamepads (DualSense and 8BitDo Lite), it refused to pair with both of them. So docking 1-star for V1.6 lack of Windows support...." Read more

"...in 2 days and I installed this morning and my headset was connected al within 5 minutes!..." Read more

"...I installed drivers manually and got it to work but it would not connect any device I tried, they showed up but it would not finish connecting at..." Read more

808 customers mention "Bluetooth capability"494 positive314 negative

Customers have mixed experiences with the Bluetooth adapter's functionality, with some finding it a great way to add Bluetooth capability and praising its connection quality, while others report issues with Bluetooth failure.

"...Fantastic for headphones however it doesn’t see my BT speaker..." Read more

"..." privileges on an XP Pro SP2 (32-bit) installation lacking ANY Bluetooth stack (let alone an active MS one capable of interfering with the process)..." Read more

"...connected my Bluetooth headphones, keyboard, and even a Bluetooth speaker with zero issues. The connection is stable, and the range is impressive...." Read more

"...for PC is a true game-changer when it comes to expanding connectivity options for your computer...." Read more

533 customers mention "Sound quality"217 positive316 negative

Customers have mixed experiences with the Bluetooth adapter's sound quality, with some reporting perfect sound while others experience poor audio and stuttering.

"...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..." Read more

"...Has a decent range and very clear sound transmission...." Read more

"...that resulted in was the sound quality diminishing and the sound remaining out of sync. Even trying it with the port that worked earlier did nothing...." Read more

"...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..." Read more

409 customers mention "Compatibility"207 positive202 negative

Customers have mixed experiences with the Bluetooth adapter's compatibility: while it works well with Xbox Series S/X controllers, some report that Windows 10 systems fail to recognize the device.

"...Bluetooth 4.0 adapter is advertised as being compatible with ALL versions of Windows – with the apparent exception of Vista – from XP to W11..." Read more

"Works great. It’s not a plug n play device. You must install the driver to make it work." Read more

"Didn't work for pairing headphones to PS4, but did work for headphones for a PC. Easy , just plug and play...." Read more

"...So docking 1-star for V1.6 lack of Windows support. I can't speak to OS compatibility of V2.6 of the product (yet)...." Read more

325 customers mention "Lag"151 positive174 negative

Customers have mixed experiences with the Bluetooth adapter's performance, with some reporting no noticeable lag and fast connections, while others experience significant delays of 1-2 seconds and stuttering issues.

"...No warning, just magically in the middle, there was a 3-5sec delay between video and output...." Read more

"...It connected quickly to my Bluetooth headphones and Xbox controller without any lag...." Read more

"...paired, and even then, the connection was shoddy and motion was iffy at best...." Read more

"...EDR and A2DP technology ensures that the audio quality is clear and lag-free, making it perfect for in a large conference room...." Read more

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Viviana Dávila Acebedo
Works Perfectly. Fast Setup & Strong Connection!
Reviewed in the United States on May 26, 2025
Verified Purchase

I plugged it in and it worked instantly—no extra drivers needed on Windows 10! It connected quickly to my Bluetooth headphones and Xbox controller without any lag. The range is solid, and the nano size is great because it doesn’t stick out. Definitely a reliable and affordable upgrade for any PC

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Viviana Dávila Acebedo

Works Perfectly. Fast Setup & Strong Connection!

Reviewed in the United States on May 26, 2025
I plugged it in and it worked instantly—no extra drivers needed on Windows 10! It connected quickly to my Bluetooth headphones and Xbox controller without any lag. The range is solid, and the nano size is great because it doesn’t stick out. Definitely a reliable and affordable upgrade for any PC

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Ramona Hubbard
Works well
Reviewed in the United States on June 12, 2025
Verified Purchase
Plugs in easy and works well. No problems with it. I've had mine for about 3 or more years now.

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christian Andres Moreno
adaptador clave
Reviewed in the United States on June 17, 2025
Verified Purchase
adapatdor clave para tu computador viejito

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Barbara S. Pryor
Good product (with help!)
Reviewed in the United States on February 6, 2025
Verified Purchase
When I first plugged this into my computer's USB port, it came up immediately and showed my computer was now searchable (it has never had bluetooth), so I was quite impressed. Then I went to the website provided to download the driver, which I had trouble finding until I realized you just enter UB400 (no more, no less). The driver didn't install without some fiddling around, but it finally looked like it worked. Great. Now just to pair the ear buds. The only problem was they wouldn't show up on the list. After much (i.e., many hours of) trying, I finally saw that I should power down the ear buds and then restart them. Voila! It then paired easily and now works well. I can go pretty much anywhere in the house and the connection works fine. It was frustrating to install (pretty much my fault though, not the dongle), but now it works and I'm satisfied. A great solution for computers which lack bluetooth technology at a low price.

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Aking
Works Great!
Reviewed in the United States on April 21, 2025
Verified Purchase
At my job my department moved to a new building and the new server doesn’t have Bluetooth built in so for the past week I’ve had to attend zoom meetings via my phone. Seen a YouTube video on this product and figured I’d give it a shot. The adapter arrived in 2 days and I installed this morning and my headset was connected al within 5 minutes! Fantastic for headphones however it doesn’t see my BT speaker (I don’t use it all that much but would have been nice to have that option. Anyway this is fantastic!

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Keith Le
You must install the driver to make it work.
Reviewed in the United States on May 29, 2025
Verified Purchase
Works great. It’s not a plug n play device. You must install the driver to make it work.

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Z
Fact vs. False Advertising
Reviewed in the United States on June 10, 2025
Verified Purchase
We recently purchased a trio of TP-Link Bluetooth USB adapters as a single Amazon order:
1.) TP-Link UB400 Bluetooth 4.0 Nano USB Adapter [UPC: 845973099664]
2.) TP-Link UB500 Bluetooth 5.3 Nano USB Adapter [UPC: 840030703447]
3.) TP-Link UB500 Plus Bluetooth 5.3 Long Range USB Adapter [UPC: 840030703447]

The primary (and by far most important) of our 3 purchases was the first (UB400), intended to add BT functionality to an older – but otherwise pristine and fully-functional – XP-based laptop lacking that intrinsic capability, and which we intend(ed) to repurpose for LPPAN communications with a centralized BT receiver. The latter 2 purchases (those involving the UB500 series) were of far less importance, being simply speculative, spur-of-the-moment additions, intended to determine whether – as suggested by TP-Link – they might potentially improve BT function and stability in a pair of newer Window computers already equipped with functioning onboard Bluetooth stacks and radios, but positioned at increasingly greater distances, relative to the older laptop, from the referenced BT receiver [hence, the choice of plain and long-range versions of the UB500 series].

As per both TP-Link's UB400 website and Amazon pages (NB: not only at the time of purchase, but currently, as well), this particular Bluetooth 4.0 adapter is advertised as being compatible with ALL versions of Windows – with the apparent exception of Vista – from XP to W11 ["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, PS4/ Xbox Controllers (UB400)"] with the proviso that the two older operating systems (XP and 7) would first require installation of a "driver" available for free from TP-L's website ["Plug N' Play for Windows 11, 10, 8.1, and 8... For Windows 11,10, 8.1, and 8, just plug UB400 into your computer to enjoy a fast, convenient Bluetooth connection. Windows XP and 7 are also supported by installing the driver from TP-Link's website*... *To download the driver, go to TP-Link's website, search for the UB400 product page, click 'Support,' and then select 'Driver.'" / "Q: What operating systems are compatible with the UB400? A: Current supported operating systems include Windows 11/10/8.1/8/7/XP, driver needed for Windows 7/XP. Does not support Mac OS and Linux."].

Upon receipt of the UB400 (which for obvious reasons was unpackaged first of the three), we promptly downloaded and installed TP-Link's requisite XP/W7 software package in PRECISE accordance with their instructions. The so-called "driver" file from their website (UB400_Driver.zip), extracted and then run under elevated "Administrator" privileges on an XP Pro SP2 (32-bit) installation lacking ANY Bluetooth stack (let alone an active MS one capable of interfering with the process) and absent any active Windows Defender or anti-virus interference, installed successfully with neither problem nor difficulty. The resultant Cambridge Silicon Radio Ltd. Harmony Wireless BT Stack & GUI (for the record, at some 425GB uncompressed, a massive piece of bloatware for any typical-of-the-era XP installation on a 60-80GB PATA/IDE 2.5" internal laptop HD) were now obviously available, although unable either to recognize or activate the USB 2.0-installed TP-Link UB400 dongle. Furthermore, no appropriate driver for same could be found on the post-install system, whether via XP's built-in driver-search function or through our own extensive, system-wide exploration (indeed, unlike with its comparable W7-11 driver package, which contains a "BT_Driver" subfolder comprising multiple further OS-specific driver subfolders, each containing the anticipated .cab and .inf files, a thorough internal search of TP-Link's XP "driver" package, including within all archive files therein, likewise failed to identify and/or locate any actual driver files, per se).

Scouring both TP-Link's website (and following all their "troubleshooting" advice, with careful attention to every detail, noting and testing every possible nuance or ambiguity) as well as a host of potentially pertinent postings from across the Internet, we identified and tested every conceivably useful variation in installation procedure, however minute or subtle, that might amend the situation, but all to no avail (despite more than a dozen such additional installations over the course of nearly two weeks' time, preceded in every instance with complete reversal of the previous via Revo Uninstaller Pro v3.2.1.0). When further extensive research failed to turn up even the slightest possible solution, we finally unplugged the UB400 adapter and returned it to its original (inner) plastic packaging and (outermost) cardboard box, preparatory to arranging for return of same to Amazon.

Only at this point did we happen to notice that the box in which our (purportedly XP-compatible) UB400 arrived, contrary to ongoing TP-Link claims on both their own and their Amazon UB400 pages, listed only "Win 11/10/8.1/7" as the full extent of compatible operating systems, with further examination of the packaging disclosing a sticker beside the surface-printed UPC Code (845973099664) indicating – in addition to the particular "S/N" and generalized "P/N" (0152602538) – that the model received was "UB400(US)" (NB: "MADE IN VIETNAM"), and additionally identifying this particular adapter as being "Ver. 2.6" (with an additional signifier, of unknown meaning or importance, immediately below same, appearing in this instance as: "1L").

Further internet research, including across all relevant sections of TP-Link's U.S. and (accessible) worldwide websites, strongly suggests that ONLY TP-Link UB400 "Ver. 1.0" to "Ver. 1.8" (introduced, apparently, in 2012 and c.2018, respectively) can be deployed under XP (SP2 or 3) via the TP-Link-provided software package (again, the questionably named "UB400_Driver.zip") installing the previously denoted CSR Harmony Wireless Software Stack (i.e., BT stack & GUI). With introduction of the "Ver. 2" series adapters (c.2023-4), including the latest "Ver. 2.6" variant here at issue, the XP-relevant "driver" package available for download from the TP-Link website is no longer compatible with ANY of their BT 4.0 adapters presently available for purchase - whether through Amazon, their own website(s), or elsewhere - and the comparable driver package specifically for the UB400 Ver. 2.6 device (currently, V2_1.9.1051.3012.zip) contains no driver whatsoever applicable to Windows XP.

In other words, TP-Link continues to advertise their current UB400 BT 4.0 adapters - whether on Amazon, their own series of worldwide web pages, or elsewhere - as being fully compatible with XP when, in fact, NONE of them are (and haven't been for at least a year or two); it likewise continues to insinuate that this non-existent XP-compatibility can be actualized by installation of a cartoonishly massive (but ultimately "XP-friendly") "driver" software package freely available for download from their website(s), when in fact, that software does not – because it cannot – do anything of the sort, being entirely incompatible with any currently available retail version of the UB400 BT 4.0 adapter; AND they likewise continue to then proffer an extensive series of "troubleshooting" steps in the now-inevitable event an unassuming customer, attempting to deploy this (TP-Link recommended) hardware-software combination for its express purpose (i.e., adding BT functionality to an XP SP2-3 installation otherwise lacking that capability), should find – against all expectations – that the purchased UB400 simply and repeatedly fails to work under XP, no matter how carefully TP-Link's installation instructions are followed, or how many slightly varied versions of same are attempted, essentially thus throwing good time and effort after bad.

In the (unlikely) event that TP-Link should respond productively to this review, which is to say, by 1.) providing a means to selectively procure a "Ver. 1" series adapter (with guaranteed functionality under XP via the still-available "driver" download package) and/or 2.) providing a functional new "driver" download package extending the advertised XP-compatibility to their current "Ver. 2" series adapters, or 3.) at very least (and at long last), correcting their long-standing false advertisement re. the (absolutely nonexistent) XP compatibility of their current product line, then we will revisit this review and, as warranted, amend the presently given rating (which, for the record, would for obvious reasons stand at zero stars, save that Amazon requires at least a single one be "awarded").

Caveat emptor (& venditor),
Z.

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Stephen
Works great
Reviewed in the United States on May 16, 2025
Verified Purchase
I got this for my wireless Xbox controller cause I don't have Bluetooth. It works perfectly. The range can sometimes fluctuate a bit, but I have no issues with my setup.

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Nathalia
Ótimo!
Reviewed in Brazil on October 31, 2024
Verified Purchase

O valor super compensa um ótimo adaptador funcionou super bem no meu pc.

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Slodacline
As Advertised
Reviewed in the United Kingdom on February 21, 2025
Verified Purchase
Does exactly what it was advertised to do, and worked for what I was using it for. did have to disable my computers built-in Bluetooth card to make it work but other than that no complaints here. :)

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Alen
Utilidad
Reviewed in Mexico on May 29, 2025
Verified Purchase
Me sirvió perfectamente para mi PC de escritorio.

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Ahmad Sami Yousef
Perfect as described!! Recommended
Reviewed in Egypt on September 5, 2022
Verified Purchase
Works the first second I plug it in my PC.

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Michael Smith
Easy setup and works well
Reviewed in Australia on August 23, 2020
Verified Purchase
Now problems with setup or compatibility. Sounds is synchronised with video.

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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, PS4/ Xbox Controllers (UB400)

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Works Perfectly. Fast Setup & Strong Connection!

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Works Perfectly. Fast Setup & Strong Connection!

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5.0 out of 5 stars Ótimo!

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Ótimo!

As Advertised

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Perfect as described!! Recommended

Easy setup and works well