whats the best bluetooth usb adapter
I haven't run into this "Best" adapter.
I've gone through 5 different bluetooth adapters. I use them mostly for my wireless headset. They have all worked relatively well most of the time, but I still haven't found an adapter that maintains a flawless and consistent connection, so I'd caution against expectations of perfection.
This is really not enough information! We need to know on what you plan on using this for and what type. --(Keep in mind)-- Bluetooth, as of (Aprox) October 2011, Bluetooth standards were updated to *Bluetooth 4.0*. It allows for a higher data rate. the older style of bluetooth before Bluetooth 4.0 was based on its own technology, it was great, but it was known for a slow transfer speed. BT v4 is now closer to Wifi which made it much quicker, and it now is able to stream video!
I personally still have a Motorola Atrix 4G, which uses Bluetooth v2.1 (ANYTHING under bluetooth v2.1 With EDR CAN'T Stream audio)
On the other side, i have it connected to my Media Server and thus to my 5.1 Yamaha system. Plus, it connects my Logitech Bluetooth wireless keyboard for the media server.
The adapter i use is a v2.1 + EDR---> ASUS USB-BT211 Mini Bluetooth Dongle USB 2.0
Why did you have to encourage? He would've been fine with something simple. I originally asked if he was going to connect multiples or a single, but then I edited it out. I've had two threads that ended in very long explanations.
Why should I get 4.0?
New Class of Electronics
I imagine the only reason 2.1 hasn't been phased out is probably due to large volumes in stock.
I liked IOGears bluetooth keyboard (it can pair with 6 devices). It is tiny, though.
No one has mentioned that the adapters also come in classes such as class 1 = 100m range or class 2 = 30m range and there is a class 3 but its not really produced due to the fact it has a 1m range.
I do recommend getting a Class 1 adapter, it will still work with class 2 devices but you will have the extra range for class 1 devices, it all depends on what kind of range you need and if its available for brand and Bluetooth version.
Class 2 is 10 meters (30 feet). I do not believe Class 1 Bluetooth 4.0 adapters are all that available, yet.
There are Bluetooth 3.0 devices out with Class 1 range.
Class 1 adapters tend to be pretty expensive.
I picked up an Asus Class 2 v3.0 for $15 off of Newegg, works very well for file transfers to my handset as well as streaming audio to BT enabled amplifiers. On Vista/7/8 it operates pretty much driverless (embedded driver in the OS works fine).
I have a AZiO BTD-V201 Micro Bluetooth Adapter USB 2.0 and it works just fine with my Samsung phone to transfer pictures and stuff.
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