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ASUS > 
Item#: 9SIA0ZX21P7550

ASUS USB-BT400 USB 2.0 Bluetooth 4.0 Adapter

  • USB 2.0
  • Bluetooth 4.0
  • Up to 3.0Mbps Transfer rate
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ASUS

ASUS USB-BT400 USB 2.0 Bluetooth 4.0 Adapter

  • Most advanced Bluetooth 4.0 adapter, backward compatible with Bluetooth 2.0/2.1/3.0
  • Enables wireless communication with Bluetooth-enabled computers, printers, phones, headsets, speakers, keyboards, controllers, and more
  • Bluetooth Low Energy technology for energy-saving wireless connectivity
  • Highly portable ultra-small design

New generation Bluetooth 4.0 for versatile wireless connectivity

The USB-BT400 is a Bluetooth Smart Ready USB adapter with new Bluetooth 4.0 capabilities. It connects you with a multitude of compatible devices and supports Bluetooth Low Energy (BLE) to reduce power consumption. In dual-mode, the USB-BT400 maintains full backward compatibility with Bluetooth 3.0, 2.1, and 2.0.

Get Bluetooth 4.0 and connect with multiple devices

The ASUS USB-BT400 provides new and advanced Bluetooth 4.0 and enables wireless connectivity with a wide range of devices such as computers, printers, phones, headsets, speakers, keyboards, controllers, and more. In addition, the ultra-small USB-BT400 comes with Bluetooth Low Energy (BLE) technology, which lets you enjoy energy-saving connectivity.

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What's in the Box

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Learn more about the ASUS USB-BT400

Model

Brand
ASUS
Model
USB-BT400

Spec

Interface
USB 2.0
Bluetooth Standards
Bluetooth 4.0
Transfer rate
Up to 3.0Mbps
Antenna
Integrated Antenna
Range
Over 10 meters in free space
Radio Frequency
2.4~2.4835GHz unlicensed ISM band
Operating Systems Supported
Windows 8, 32bit/64bit
Windows 7, 32bit/64bit
Windows XP, 32bit/64bit
Dimensions
19.47 x 16 x 8.1 mm (WxDxH)
Weight
2.2 g

Features

Features
Spectrum: FHSS (Frequency Hopping Spread Spectrum)

Most advanced Bluetooth 4.0 adapter, backward compatible with Bluetooth 2.0/2.1/3.0

Enables wireless communication with Bluetooth-enabled computers, printers, phones, headsets, speakers, keyboards, controllers, and more

Bluetooth Low Energy technology for energy-saving wireless connectivity

Highly portable ultra-small design

Profile/protocol support:
-4.0 Host Controller Interface
-Advanced Audio Distribution Profile
-AMP Host Controller Interface
-AMP Manager Protocol
-Attribute Protocol
-Audio/Video Control Transport Protocol
-Audio/Video Distribution Transport Protocol
-Audio/Video Remote Control Profile
-Basic Imaging Profile
-Basic Printing Profile 1.2
-Bluetooth Network Encapsulation Protocol
-Device ID Profile
-Dial-Up Networking Profile
-File Transfer Profile
-Find Me Profile
-Generic Access Profile
-Generic Attribute Profile
-Generic Audio/Video Distribution Profile
-Hands-Free Profile
-Hardcopy Cable Replacement Profile
-Headset Profile
-Host Controller Interface
-Human Interface Device
-Interoperability Test Specification
-Logical Link Control and Adaptation Protocol
-Message Access Profile
-Object Push Profile
-Personal Area Networking Profile
-Phone Book Access Profile
-Proximity Profile
-RFCOMM with TS 07.10
-Security Manager Protocol
-Serial Port Profile
-Service Discovery Application Profile
-Service Discovery Protocol
-Synchronization Profile
-Video Distribution Profile

Quick Info

Warranty

  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years


Customer Reviews of the ASUS USB-BT400

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  • Elijah W.
  • 12/20/2014 10:39:01 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat product for the price

Pros: Small footprint. Bluetooth 4.0. Works as expected.

Cons: None so far. Haven't had it long enough to know of reliability.

Did you find this review helpful? Yes No

  • David H.
  • 12/4/2014 8:30:17 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggs***DO NOT BUY (EVEN IF A FEW BUCKS)***

Pros: Small, BT 4.0

Cons: Only worked for 1 day...then broke. Not worth to replace it.

Did you find this review helpful? Yes No

  • Anonymous
  • 12/3/2014 5:41:22 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsReally short range

Pros: You can get it for cheap.

Cons: The range as shorter then a wired ear bud earphones... So if you think you can go to the other side of the room while using these things... your wrong.

The thing wont even reach more then 5 feet.

Other Thoughts: I read other reviews that said the range was short... but I did hope that it would at least reach to the other side of the room. It sometimes cuts off and gets static when the devices are only 3 feet away from each other.

So no use in using this as a wired device will work much better (no static and timing issues.).

1 out of 2 people found this review helpful. Did you? Yes No

  • jeff r.
  • 11/23/2014 3:03:37 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsBuyer Beware

Pros: NONE

Cons: Got this in Dec 2013 never have got it to work...

Other Thoughts: Got this for $5 after rebate...It was a Bad Buy

0 out of 1 people found this review helpful. Did you? Yes No

  • Thomas K.
  • 10/30/2014 2:46:13 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsDon't buy

Pros: none

Cons: does not connect and never has

0 out of 1 people found this review helpful. Did you? Yes No

  • Thomas S.
  • 10/26/2014 3:54:20 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

1 out of 5 eggsThis is not the bluetooth adaptor you're looking for.

Pros: It kind of works? i guess?

Cons: I got this bluetooth adaptor because i wanted to use my PS4 controller while sitting back on my couch, while playing games on my computer.. The only problem is, when i'm standing 3 feet away from my computer, the connection sometimes lags, making gaming with this completely unusable. If i sit back about 8 feet away, the controller loses connection to the bluetooth adaptor. This is garbage. I would recommend getting a better bluetooth adaptor, or just buying an extremely long cord for a few dollars online, and save your self the hassle. Asus has lost my trust. i'll be sure to do some research before buying any more of their products.

2 out of 3 people found this review helpful. Did you? Yes No

  • Randy C.
  • 10/6/2014 6:40:42 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsBad

Pros: None that I have found

Cons: Just simply does not work. Tried on several computers without success.

0 out of 1 people found this review helpful. Did you? Yes No

  • K W.
  • 9/23/2014 11:00:36 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks great!

Pros: Has worked in every application I have needed it to, nice compact build.

Cons: none

Did you find this review helpful? Yes No

  • alexander m.
  • 9/16/2014 10:51:28 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

2 out of 5 eggsFine till it dies

Pros: works fine, short range, multiple devices. Used it for my ps4 controller, and never had any issues with it till....

Cons: .....it died. Only after a few months of usage. There's no excuse for this, and from what I've been reading a LOT of people are having this happen. I'm now using the bt-211, which i think is an updated version of this one. Hopefully they worked the kinks out. cannot recommend.

Other Thoughts: Died after a few months. Speaks for itself.

1 out of 2 people found this review helpful. Did you? Yes No

  • Vern C.
  • 9/16/2014 8:44:08 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsreceived fast and works very well.

Pros: What a great item.. I have one I have used for a long time and now received another which is working very well .. I tried to order another that turned out to be out of country and did not receive so FINALLY order this one I know works and comes fast.. I am well pleased..

Cons: None that I can see..

0 out of 1 people found this review helpful. Did you? Yes No

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Home > 
Computer Hardware > 
Networking > 
Wireless Networking > 
Network - Bluetooth > 
ASUS > 
Item#: 9SIA0ZX21P7550
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