Support | AVerMedia
※ Please enter the product model number (e.g. GC513) or question in the search box or follow the steps below to find your solution.


ExtremeCap UVC - BU110

[1] on Windows computer

Step 1: connect BU110 to your PC with the supplied USB 3.0 Type A to Type C adapter.

Step 2: connect the input source (for example: digital video camera) to the HDMI input terminal of BU110.

Step 3: download and install latest version of RECentral 4 from AVerMedia official product page BU110 downloads.

Step 4: run the software (RECentral 4 or OBS Studio) and start the recording or live stream

BU110 is a plug&play UVC (USB video class) UAC (USB audio class) product that on Windows 8.1 or Windows 10 operating systems doesn’t require separate driver installation it will get detected in 3rd party application as a web camera.

With installation of RECentral 4 there will be “AVerMedia Extreme Cap UVC Stream engine” plugin installed at the same time. Using BU110 with 3rd party applications “Stream engine” will improve performance and video quality.

[2] on MAC platform

Step 1: connect BU110 to your MAC with the supplied USB 3.0 Type A to Type C adapter

Step 2: connect the input source (for example: digital video camera) to the HDMI input terminal of BU110.

Step 3: run 3rd party software (OBS Studio or QuickTime) and start the recording/ live stream.

[3] on Android device

Step 1: connect BU110 to your Android smartphone with USB OTG adapter.

Step 2: connect the input source (for example: digital video camera) to the HDMI input terminal of BU110.

Step 3: download and install “CameraFi Live” (live streaming) or “CameraFi” (capture) application from Google Play Store.

Note: “CameraFi Live” isn’t compatible with every Android device, make sure to confirm compatibility on CameraFi official website ..

AVerMedia doesn’t pay responsibility for charges required to use the application.

BU110 can support only digital video cameras with following resolution outputs:


If the connected input source (video camera, media player, professional video equipment) doesn’t meet above specification there will be “Out of range”, “No signal” or black screen error shown in the software application.

Although BU110 can receive input from game consoles, it doesn’t have HDMI pass-thru. This means that in the software preview certain level of latency might be experienced (when connected to USB 3.0 port around 0.13 seconds latency).

Please check at “Device Manager” under “Sound, video, game controllers” whether do you see capture card displayed as “AVerMedia ExtremeCap UAC” if you see it as “USB Audio device” this means that the installation wasn’t not completed successfully. Please click on right mouse button then select “Uninstall device” uninstalling the device then rebooting the computer will solve this problem.

A: Connecting BU110 to Android phone via USB Type-C cable symptom shown on below picture might occur:

This video noise is caused by Android system limitation that limits USB 3.0 bandwidth and results failure of data transmission.

The solution is to connect BU110 to your Android phone via USB 2.0 adapter that will enforce down to USB 2.0 data transmission and the video from HDMI input will display properly in CameraFi Live application.

Or it’s also possible to use USB 2.0 specified Type-C USB cable

Please install the Driver 1.0.X.13 by below:
Illustration 1

Illustration 2

RECentral 4 shows “Device Occupied” error message



If you have already updated your system to Windows 10 [1803]

This error is resulted by the new update that controls the way of applications connecting your webcams and video capture devices.

Please refer to following steps to resolve the situation:


In Windows Search type “Privacy Settings” then click “Enter”



1. At Privacy Settings/ App Permissions/ Camera find the toggle and make sure to set it on

“Allow apps to access your camera”


2. At Privacy Settings/ App Permissions/ Microphone find the toggle and make sure to set it on

“Allow apps to access your microphone”



Make sure that your UAC (USB Audio Class) device (for example: GC510, GC513, GC570, BU110) is enabled* at Windows Volume panel under Recording devices.

*Note: if you plug microphone to your system that will be the default device, but UAC device still has to be enabled.



If your device is USB interface (for example: GC510, GC513, BU110) try to remove it from the connected USB port then plug it back.



Reinstall driver for the UAC device: remove the UAC device manually from Device Manager by right click on its name then select “Uninstall device”,



then at Device Manager/Action panel select “Scan for hardware changes”



Go into Windows Task Manager and at Services “Stop” RECentral service


then restart it by clicking “Start” it.



If you set graphic card codec in RECentral 4 settings, make sure to update your standalone graphic card driver to its latest version.


Go to Device Manager on your PC and make sure AVerMedia ExtremeCap UAC is listed under Imaging devices and Sound, video and game controllers.

*In some rare cases, your ExtremeCap UAC might be detected as a question mark (?) or a USB audio device. If that happens, right-click the device name and select Uninstall, and then reconnect the USB cable.

Note: after Windows 10-1709 update BU110 Extreme Cap UVC will be listed in Device Manager under “Cameras” instead of Imaging devices.

We would recommend you play the H.265(HEVC) video clip with Potplyaer or VLC.


Illustration 1:


Illustration 2:


Still cannot find a solution? Contact us.


Legal Policy and Terms of this Web site:

The information on this Web site is provided by AVerMedia Technologies Inc. (hereinafter called AVerMedia) as a service to our customers. Customers may download information provided on this Web site within a reasonable range for non-commercial purposes; however, they must comply with the Terms of Use stipulated below. Downloading information from this Web site constitutes agreement with following terms and conditions. If you do not agree to the following terms and conditions, please do not use this Web site. 

1. Privacy 

(1) User Compliance
All information users have provided on this Web site will be regarded as non-confidential information and AVerMedia is not under obligation to ensure communication security. It is prohibited for users to provide material that is illegal, threatening, defamatory, obscene, pornographic or which otherwise violates laws, statutes and regulations in the territory where users locate. 

(2) Personal Information
User's personal information is highly valuable to AVerMedia. We will not disclose personal information and any personal information you have provided will only be used on this Web site. AVerMedia will keep your information and save a backup in the Web site database. However, AVerMedia will not disseminate the contents of the information database to other individuals or companies.

2. Terms of Use 

AVerMedia,圓剛, AVer, AVer TV, RECentral and 液晶精靈 are trademarks or registered trademarks of AVerMedia. The absence of any trademarks or registered trademarks of AVerMedia in this policy statement or other parts of this web does not constitute a waiver of any rights or interests that AVerMedia has established.

The trademarks of AVerMedia may not be used without express permission. If you have any demand for using AVerMedia's trademarks, the prior written consent of AVerMedia is required. Appropriately reference to source and proper acknowledgement therein are also required, such as to make a statement "AVerMedia is the registered trademark of AVerMedia Technologies Inc.". You may obtain the License for the use of product imagines, trademarks and logos of AVerMedia via contacting AVerMedia for detailed information.

All other products and brand names posted on this website are registered trademarks of the relevant companies, such as "Microsoft" and "Windows" of Microsoft Corporation of the United States and "Intel" of Intel Corporation of the United States. 

(2)General Information 
AVerMedia may from time to time revise legal information without notice to conform to new company policies. Please visit this website periodically to review the current Terms of use. The continued use of this website will mean user accept any change. 

(3)Downloading Software 
AVerMedia provides original drivers and related software on this Web site that can be downloaded by customers. (You may download one driver software related to the product you purchased to update your PC's driver software.) However, unauthorized use of this company's software for commercial purposes is prohibited.

It is acknowledged that the original software drivers AVerMedia provides may be modified by various hardware manufacturers for the purpose of different hardware optimization. AVerMedia does not guarantee that all the drivers provided from this website will meet requirements of the users'' current equipments or devices and in no events shall AVerMedia bear any liability, whether express, implied or stipulated by related laws and regulations. If you have any technical problems after downloading the software, AVerMedia recommends users to ask for help directly from your PC manufacturers or distributors who sell the equipment or devices.

(4)Policy Scope
This policy is applicable to all AVerMedia's global Websites, and versions of these Websites in various languages. AVerMedia Technologies Inc. All rights reserved. No reproduction. AVerMedia Technologies Inc.