TP-Link UB4A User manual

REV1.0.0 1910012508
User Guide
Bluetooth 4.0 Nano USB Adapter

Contents
About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Chapter 1. Get to Know About Your Adapter . . . . . . . . . . . . . . . . . . . . .2
Chapter 2. Connect to a Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Chapter 3. Windows XP/7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3. 1. Install Bluetooth Adapter’s Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. 2. Pair With Your Bluetooth Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3. 3. Uninstall Bluetooth Adapter’s Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Chapter 4. Windows 8/8.1/10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Appendix: Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1
About This Guide
This guide is a complement to Quick Installation Guide. The Quick Installation
Guide instructs you on quick installation, and this guide provides the product
overview and detailed instructions for each steps.
When using this guide, please notice that features available of the adapter may
vary by model and software version. The adapter’s availability may also vary by
region or ISP. All images, steps, and descriptions in this guide are only examples
and may not reflect your actual experience.
Conventions
In this guide, the following conventions are used:
Convention Description
Teal Underline Hyperlinks are in teal italic. You can click to redirect to a website or a
specific section.
Teal Contents to be emphasized and texts on the web page are in teal, including
the menus, items, buttons, etc.
Note: Ignoring this type of note might result in a malfunction or damage to the
device.
Tips: Indicates important information that helps you make better use of your
device.
*Maximum wireless signal rates are the physical rates derived from IEEE Standard 802.11 specifications.
Actual wireless data throughput and wireless coverage, and quantity of connected devices are not
guaranteed and will vary as a result of network conditions, AP limitations, and environmental factors,
including building materials, obstacles, volume and density of traffic, and AP location.
More Info
• The latest software and utility can be found at https://www.tp-link.com/
download-center.
• The Quick Installation Guide (QIG) can be found where you find this guide or
inside the package of the product.
• Specifications can be found on the product page at https://www.tp-link.com.
• Our Technical Support contact information can be found at the Contact
Technical Support page at https://www.tp-link.com/support.

Chapter 1
Get to Know About Your
Adapter
This chapter introduces what the adapter can do.

3
Chapter 1 Get to Know about Your Adapter
The Bluetooth USB adapter, mainly used for PCs without Bluetooth function. It
provides new and advanced Bluetooth 4.0 and enables wireless connection with
a wide range of devices such as a Bluetooth headset, a Bluetooth speaker, a
Bluetooth mouse or a mobile client, using for playing music, mouse and keyboard
control, data transmission, etc.
• Applies the latest Bluetooth 4.0 with low energy (BLE) technology and it is
backward compatible with Bluetooth V3.0/2.1/2.0/1.1
• Enable wireless connection with Bluetooth-enabled devices
• Plug and Play for Win 8, Win 8.1, and Win 10
• Ultra-small for convenient portability with reliable high performance
• Supports Windows 10/8.1/8/7/XP

Chapter 2
Connect to a Computer
This chapter introduces how to connect the adapter to your computer.

5
Chapter 2 Connect to a Computer
Before you start using your adapter, insert the adapter into a USB port on your
computer directly.
* The image is for demonstration only.
After connecting your adapter to the computer, please follow the instructions
in the appropriate chapter for your operating system: Windows XP/7, Windows
8/8.1/10.
Note:
Make sure there are no other Bluetooth devices on the PC. If there are other Bluetooth devices, disable
all Bluetooth devices (both built-in and third party) in Device Manager on your computer, then insert the
adapter and try again. To go to Device Manager: Right-click My Computer, select Manage, go to Device
Manager and disable all existing Bluetooth devices.

Chapter 3
Windows XP/7
This chapter introduces how to install your adapter’s driver, pair with your
Bluetooth devices and uninstall your driver in Windows XP and Windows 7. The
adapter is equipped with a Driver Setup Wizard, which can guide you through
the installation process.
This chapter includes the following sections:
• Install Bluetooth Adapter’s Driver
• Pair With Your Bluetooth Devices
• Uninstall Bluetooth Adapter’s Driver

7
Chapter 3 Windows XP/7
Here we take the steps in Windows 7 as an example - the steps may vary slightly
for Windows XP. You need to install the Bluetooth adapter’s driver before you
enjoying using the adapter.
3. 1. Install Bluetooth Adapter’s Driver
1. Download the driver at https://www.tp-link.com/download-center.
2. Unzip the folder and start the installation by clicking Setup.exe.
3. Select the language and click OK.
4. When the welcome window appears, click Next.

8
Chapter 3 Windows XP/7
5. Confirm that you agree with the terms of the License Agreement and click
Next.
6. Select the installation folder and click Next. It’s recommended to use the
default one.

9
Chapter 3 Windows XP/7
7. Change Discovery Mode to Discovery ON, select Device Type: Laptop or
PC/Desktop and it’s recommended to keep the original values of SCMS-T.
Click Next.

10
Chapter 3 Windows XP/7
8. Click Install to begin the installation.
9. When the finish screen appears, click Finish.

11
Chapter 3 Windows XP/7
10. Restart your computer.
11. After restarting the computer, you will find a Bluetooth icon in the menu bar,
which means the driver has been installed successfully.
Note:
1. If you can’t install the driver successfully, disable the antivirus software and firewall, then try again.
2. If the Bluetooth icon doesn’t appear, refer to Troubleshooting->T1.
3. 2. Pair With Your Bluetooth Devices
1. Right-click the Bluetooth icon in the menu bar and select Add Bluetooth
Devices, for example, Audio/Video devices.
Note: Make sure your Bluetooth device is set to be discoverable.
2. Select the found-out device from the list and click Next.
3. Click Finish when completing the pairing.
Note:
During the pairing you may be prompted to enter the pairing code. You need to enter the identical
code to both devices. If you pair the earphones that do not enable to enter a code, please try to use
the combination of 0000 or 1234, or have a look at the manual of your paired device.

12
Chapter 3 Windows XP/7
3. 3. Uninstall Bluetooth Adapter’s Driver
Go to Start > All Programs > TP-Link and find the model you want to uninstall.
Follow the on-screen instructions to complete the uninstallation.

Chapter 4
Windows 8/8.1/10
This chapter introduces how to pair with your Bluetooth devices in Windows 8,
Windows 8.1 and Windows 10.

14
Chapter 4 Windows 8/8.1/10
For Window 8, Windows 8.1 and Windows 10, plug and play. Insert the adapter
and enjoy pairing with your Bluetooth devices. You don’t need to install the
driver manually.
Pair With Your Bluetooth Devices
1. Double-click the Bluetooth icon on the menu bar.
Note:
1. Make sure your Bluetooth device is set to be discoverable.
2. If the Bluetooth icon doesn’t appear, refer to Troubleshooting->T1.
2. For Windows 8/8.1, skip this step. For Windows 10, click Add Bluetooth or
other device to scan for Bluetooth devices.
3. SelectyourBluetoothdevicefromthelistandfollowtheonscreeninstructions
to complete pairing.
Note:
During the pairing, you may be prompted to enter the pairing code. You need to enter the identical
code to both devices. If you pair the earphones that do not enable to enter a code, please try to use
the combination of 0000 or 1234, or have a look at the manual of your paired device.

15
Appendix: Troubleshooting
T1.What should I do if the Bluetooth icon doesn’t appear?
• Make sure you have installed the Bluetooth driver if using Windows XP or Windows
7 system. And restart the computer after installing the driver.
• Make sure there are no other Bluetooth devices on the computer. If there are,
disable all existing Bluetooth devices in Device Manager, then insert the adapter
and try again. To go to Device Manager: Right-click My Computer, select Manager,
go to Device Manager and disable all existing Bluetooth devices.
T2.Why the adapter is not working with my Bluetooth device?
• Make sure your device has BLUETOOTH function.
• For devices with non-standard Bluetooth protocols, such as Logitech Mouse and
Airpods, there may be some compatibility problems. For the compatibility list, refer
to https://www.tp-link.com/faq-2316.html
If you still have questions and need further help, please refer to
https://www.tp-link.com/faq-2316.html

COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. is a registered
trademark of TP-Link Technologies Co., Ltd. Other brands and product names
are trademarks or registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or
used to make any derivative such as translation, transformation, or adaptation
without permission from TP-Link Technologies Co., Ltd. Copyright © 2020 TP-
Link Technologies Co., Ltd. All rights reserved.

FCC compliance information statement
Product Name: Bluetooth 4.0 Nano USB Adapter
Model Number: UB400/UB4A
Responsible party:
TP-Link USA Corporation, d/b/a TP-Link North America, Inc.
Address: 145 South State College Blvd. Suite 400, Brea, CA 92821
Website: https://www.tp-link.com/us/
Tel: [phone]
Fax: [phone]
E-mail: [email protected]om
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:
1 ) This device may not cause harmful interference.
2 ) This device must accept any interference received, including interference
that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

Note: The manufacturer is not responsible for any radio or TV interference
caused by unauthorized modifications to this equipment. Such modifications
could void the user’s authority to operate the equipment.
FCC RF Radiation Exposure Statement:
This equipment complies with FCC RF radiation exposure limits set forth for an
uncontrolled environment. This device and its antenna must not be co-located
or operating in conjunction with any other antenna or transmitter.
“To comply with FCC RF exposure compliance requirements, this grant is
applicable to only Mobile Configurations. The antennas used for this transmitter
must be installed to provide a separation distance of at least 20 cm from all
persons and must not be co-located or operating in conjunction with any other
antenna or transmitter.”
We, TP-Link USA Corporation, has determined that the equipment shown as
above has been shown to comply with the applicable technical standards, FCC
part 15. There is no unauthorized change is made in the equipment and the
equipment is properly maintained and operated.
Issue Date: 2020.03.18