ASUS USB-BT400 USB 2.0 Bluetooth 4.0 Adapter

I picked up the ASUS USB-BT400 Bluetooth adapter way back in 2018, and honestly, it’s still running perfectly in 2026. I’ve built and upgraded a lot of PCs, and this little adapter just keeps working. Connectivity is solid—I haven’t had issues with my headphones, headsets, mice, or controllers dropping out. Everything just pairs up and works, even when I’m swapping devices around for gaming or work.The only exception is my Fire tablet, but that’s not really the adapter’s fault. Some devices have built-in security (like locked bootloaders or pairing restrictions), so they just won’t connect to anything that’s not an approved peripheral. That’s a tablet-side thing, not a problem with the ASUS adapter.Latency has never been an issue for me, even with my high-DPI Razer Basilisk gaming mouse. No noticeable lag, even when I’m gaming or moving between devices. If you’re chasing the absolute lowest latency for competitive gaming, maybe a Bluetooth 5.0 adapter would have an edge, but for my setup, this one is honestly great. I don’t see a strong reason to upgrade when everything just works. It is a great value, it's supported by windows out of the box, it's very small too.The adapter is still going strong after years of daily use, no defects, no weird disconnects, nothing. It’s just a solid, reliable piece of hardware. For anyone needing Bluetooth on a desktop or upgrading an older PC, I definitely recommend it. Still using mine in my current rig and it hasn’t let me down.PC builder, gamer, and tech junkie approved!

The ASUS USB-BT400 Bluetooth Adapter is a versatile and reliable solution to upgrade your PC or laptop with Bluetooth connectivity. Whether you want to connect wireless peripherals, transfer files, or simply enjoy the convenience of Bluetooth, this tiny dongle has you covered.One of the standout features of this Bluetooth adapter is its ease of use. It's a 'plug and play' device, which means that it's incredibly simple to set up on Windows 10/8/7/XP. You just plug it into an available USB port, and your computer recognizes it automatically. This quick and hassle-free installation is a big plus for users who want to avoid complicated setups.The adapter supports a wide range of Bluetooth devices, including printers, phones, headsets, speakers, keyboards, and controllers. This versatility makes it a valuable addition to your PC, enabling you to connect various peripherals and accessories without the need for multiple adapters.Despite its compact size, the ASUS USB-BT400 delivers reliable and stable Bluetooth connections. Whether you're streaming audio to wireless speakers or enjoying lag-free gaming with a Bluetooth controller, this dongle ensures a seamless experience.ASUS is known for its quality and durability, and this adapter is no exception. It's built to last, and you can trust it to provide long-term Bluetooth connectivity without issues.The sleek black design of the dongle blends well with most computer setups, and its small size means it won't block adjacent USB ports or get in the way.In conclusion, the ASUS USB-BT400 Bluetooth Adapter is a cost-effective and efficient solution for adding Bluetooth connectivity to your PC or laptop. Its 'plug and play' setup, compatibility with various devices, and reliable performance make it an excellent choice for users who want to enjoy the benefits of Bluetooth without the fuss."

I have both a Win7 and Win10 PC's this worked flawlessly and without issue in both. Win10 automatically nd for Win7 I just got the driver pkg from Asus, it installed 1-2-3 and I connected immediately. The range is beyond belief. I was using my mouse and a BT speaker on my laptop in the kitchen. I took my win10 laptop to my bedroom on other side of house (same floor). I had it sitting less than 2 feet above the floor. Im moving out and had only a plain mattress on the floor to explain that . I started watching a movie and the sound from my laptop is so weird and low , Im like WTHeck. I keep fiddling with it figuring its the soft surface I have the laptop on. I then realize I left the BT speaker in the kitchen and it was still playing through there! So Im at least 45ft away, its going thru a bathroom wall plus the pipes in the wall and the cabinets/vanity thats in on the wall, thru the bathroom and the other wall in the kitchen and a double oven and a wall of cabinets, was on the 2nd wall, plus it had to make it thru a 5x5 kitchen island with associated piping and a steel range cooktop with an overhead SS exhaust vent above it to help block any RF trying to sneak from above., and my table was about 8 ft from the island. Beyond belief!!! This is far more powerful than the BT that was in my other broken lap top that couldn't transmit 5 feet to this speaker without even cutting out. Oh one more thing, my laptop using this had the BT dongle on the opposite side of the bathroom wall so it was pointing the opposite direction as in a way, as in RF propagating away from the intended BT speaker so add that on top of this puppies performance. Im just embarrassed to say I didn't realize the speaker was in the kitchen and I couldn't figure out why the sound was so bad, but I'll take it for the performance of this., little marvel.

So like everything... it's not perfect. But given the price point, I'm not complaining. Just to be clear so people have complained about streaming audio from this unit, and that is not something I have done, so if you are looking for an opinion on that you can stop reading now.My prior BT adapter (non-ASUS) always had problems keeping the connection to my BT Keyboard. And I would have to unplug it and plug it back in. This was a horrible inconvenience. This unit does not have that problem at all, which is the biggest reason I like it, but some of the other features have been great as well.While I haven't streamed audio from the unit, I do use it to stream audio to it. And this works fantastic. I really like the ability to use my phone to stream audio. Been great for listening to web radio. However, it is a little annoying when a phone call comes in, because it will want you to use the unit as a speakerphone, which is an issue since I don't have a mic on this PC.The proximity locking feature is also nice. Set it to automatically lock your PC when your phone is out of the specified range (3 settings, Close, Very close, and Intimate) It's nice, but a little too sensitive. I found that if I use my phone to do other tasks it will lock my PC. So I am not using this feature anymore.It also says it will allow you to send and receive text messages via the ASUS software. I don't know if this works for anyone, but I have an iPhone 5, and it does not work at all. Not a big deal though, but it is annoying when you have something that doesn't work like it says it would. But this is likely an Apple issue, and not an ASUS issue.Overall I am very pleased with this unit and would highly recommend it. I would give it 5 stars, if it didn't try to hijack my phone calls when I am streaming audio to it. The hardware is great, the software needs a little tweaking.

I almost gave up on this product and returned it after so many attempts of installing and deinstalling. The bluetooth(s) that I had from Motorola gets configured with/ without sound, but always deconfigured itself on screen sleep or device on/off modes. I had to always remove the device and reinstall it , as it quits installing the second time when already defined once.Knowing my nature , I don’t give up that easy once I believe in a product such as ASUS, I decided to read the reviews as last bullet to see what other people said. Sure enough I discovered that the driver packaged with the product was old. I displayed the CD files, they’re really old.I trusted the software coming with a newly purchased product. But, It caused me a lot of pain and lots of wasted hours of troubleshooting and reading articles.I finally downloaded the newer driver of 2016, as suggested by one of the reviewers named Koehler, from their web site. You’re excellent man with your step by step instructions.I Installed it and followed his directions. It worked like a charm from the first time, as I originally expected. Glad I didn’t return it.Lesson learned:1- I had previously opened a trouble report case with ASUS: I got ZERO help from their first level team. The representative said we will call you back, but never did ! Unlike ASUS support which is usually great!2- As for Amazon’s Quality control team, when comes to software/hardware/firmware, they should be much tougher than that on their vendors to make sure their packaging is up to date, or at least include readme note to make the user is aware of the newer driver, rather than having the customer go thru this tedious process of fighting a product that doesn’t work.

I purchased one of these for a WIN 10 machine and it worked great. Auto installed (plug and play) and paired OK with my URPOWER II speaker (same as AOMAIS Sport II) and JBL Flip 3 speakers.So, when I needed a USB adapter for a WIN 7 (64 bit) PC, I purchased another USB-BT400. TOTALLY different experience! Firstly, the device is not plug and play with Win 7 but requires software install. The supplied disk contains a huge bloatware driver package (over 200mb) with lots of unwanted and unneeded bluetooth features. My URPOWER speaker appeared as a bluetooth headset (instead of speaker) and would not pair at all. I searched for a smaller simpler driver at Asus website but only found the same huge bloatware for Win7 (where Win 10 driver is only about 20mb). I returned the adapter to Amazon.I did not attempt to contact support nor did I try any other brands of adapters - I didn't want to spend any more time on this after a few hours of messing around with this one. I'm just going to use a 3.5mm audio cable and plug the sucker in.

It's been miss or miss for me with Bluetooth adapter-dongles, where they pretty much fail to work at all - or at least for what I need them to do. For a long time I had no need for them, as all my machines and peripherals and doo-dads were Bluetooth capable on their own, which was a very convenient "fix" for the dongles not working so well. However, when my *new* work PC ended up having no onboard Bluetooth for my BT Bose headphones, I decided to test the waters again one last time.I searched and searched to find one from a familiar name brand, which with little peripherals like this, is kind of a pain in the patootie. Google or Amazon search for "bluetooth dongle" "adapter" or the like and you will get a million and one rando-brand options for $5-15. After some deliberate searching I came across this one. I know ASUS. Not like every ASUS product has worked like a dream, or the brand is free of lemons (I've exchanged a couple GPUs over the years and had a bad MOBO) but I *knew* the name, unlike all the other random "brands" at the top of the search pile. So, essentially, I was a bit wary (due to BT adapter unluckiness) but optimistic (due to brand familiarity).This guy arrived in the mail, I plugged it into the USB slot, dropped in the driver disc, and within a couple minutes (5 tops?) I was able to connect my Bose headphones to my computer. Yay!Why do I like this adapter compared to the others?1. It was a good deal-- not only because it was cheap, but because it worked!2. It was pretty much plug and play.3. Unlike a lot of other generic, import brand dongle things-- the directions were clear. There was no head-scratching, boggling, or Googling trying to find the driver for the whackadoo no-name brand online since the one supplied with the item didn't work.4. THANK YOU, ASUS!Bottom line: It worked for me where these buggers never have before. All the directions are clear. I imagine if there was a problem with it you might have an easier time troubleshooting and/or getting tech support because the product is an ASUS as opposed to some other random company. If you've been burned before, give this one a try.

I bought this as an upgrade for my old Bluetooth 2.0 dongle. I was buying new headphones and Amazon recommended this to go with it, so I bought it. That was a mistake. I should have read up before purchasing--this is very clearly a Bluetooth 4 product. That's on me, but I'm mad at Amazon for recommending it. Why would I "upgrade" to something so old that the instruction manual hasn't even heard of Windows 10? The next bad sign came when I opened the package and it has a piece of paper printed on both sides with a 3" red Stop sign and text saying "Please do not return this product before calling support." Sounds like lots of people have trouble making this work. I understand their problems may not be the fault of ASUS, but regardless of the cause it was a clear sign that I might not be in for a simple "plug and play" experience. Sure enough, after following the installation instructions carefully I ended up with the fairly common "bluetooth sound skipping" problem. I tried all the things I could think of: ensuring the headphone firmware was updated, letting Windows update the ASUS Bluetooth driver (to something released in 2013), resetting the headphones, moving the dongle to a different USB port... 45 minutes and several reboots later, I had made no progress and was rewarded with a blue screen of death and an error code indicating some driver state problem. I uninstalled the ASUS Bluetooth software, reinserted by old Bluetooth 2.0 dongle, and instantly the headphones worked just fine. It's true I don't know that my problems were caused by shortcomings in the ASUS dongle. Perhaps it has to do with some obscure interaction with my particular headphones, or with my USB ports. But it's also clear that this is a very old product with drivers not updated since 2013, and that many people have trouble making it work.

Works well on a desktop PC. Paired with AirPods Pro, had no issue with performance.

Like:- Let's just appreciate the packaging first. Very few brands get it right. Though, ASUS USB-BT400 was only $19. something... but, it came in a useful packaging; by useful, I mean easy to unpack the product out of it, all reading stuff(manuals, product registering, product sticker etc.,). I, for one, store away the packaging material--they are quite helpful.- Secondly, the product WORKS GREAT as advertised.- Quite EASY-TO-SETUP. Just PLUG-N-PLAY, click 'Connect' and you shall see your device in the list(given you set the connecting device in searching mode...). I paired Sony WH-CH400 and it's working like a charm. Great sound quality.Dislike:- Nothing I could think of. I don't know why there's so much complaining on here about it.P. S. Why isn't there an option to add photos, Amazon? 🤔P.S.S. Oh, now there is an option. Perhaps, Amazon read this review. Lol

Orjinal ve sıfır ürün.kargo güzel ve hızlı.bluetooth özelliği olmayan pc'ler için kolay çalışan ve iyi bağlantı sağlayan bir ürün.

I'm using this on my desktop PC for my Bose QC 35 II and Xbox One controller.The Bose have about 100ms of latency or so which is because of the headphones themselves, not usable wirelessly for gaming because of this reason. Fine for anything else, just adjust your audio sync by -0.1s in your video player.The controller works very well. Hard to tell, but I think there's about 10ms input lag which is about to same when it's wired. Win win.

Me llego súper rápido para ser un envió internacional también la instalación fue súper fácil utilizando el disco que viene dentro del empaque solo tuve que reiniciar el equipo y listo para usar tal cual como indica las indicaciones del producto el sistema que uso es Windows 10 64bits. Solo lo ocupo para transferir información de mi celular al PC y del PC al celular sin ningún problema y con buena velocidad el empaque venia un poco golpeado pero nada fuera de lo normal por ser un envió internacional ya que lo envían en la típica bolsa sin ningún recubrimiento para evitar los golpes que puedan ocurrir.