Lenovo B4400s Driver Download
The B4400s is an audio device manufactured by Lenovo. This driver fixes problems with no sound or static or distorted sound, and can unlock advanced features of your audio device. This driver - "j8ac21ww.zip" - has been downloaded 15 times and is rated 5 out of 5 stars based on 6 reviews. The uploader reports that this update will work successfully on PCs running Windows 11, Windows 10, Windows 8 and Windows 7. The total disk space used for this update is 81.8 MB.
Supported Models
Lenovo B4400s
Conexant 20751 SmartAudio HD
Manufacturers
Supported Operating Systems
Windows 11, Windows 10 (64 bit), Windows 8 (64 bit), Windows 7, Windows 7 (64 bit)
File Name
Versions
8.64.62.50 (11-Sep-2014)
Additional Notes
Audio Driver File
Uploaded By
siddhik (DG Staff Member) on 9-Jun-2016
Related Driver Updates
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| AFA/AFA/AFA32.cab | 465.6 KB | 15 Mar 2013 |
| AFA/AFA/AFA32.cab/CAudioFilterAgent.exe | 844.9 KB | 15 Mar 2013 |
| AFA/AFA/AFA64.cab | 482.2 KB | 15 Mar 2013 |
| AFA/AFA/AFA64.cab/CAudioFilterAgent64.exe | 900.7 KB | 15 Mar 2013 |
| AFA/AudioFilterAgent.INI | 2.8 KB | 22 Mar 2013 |
| AFA/Setup.exe | 3.2 MB | 3 Jan 2013 |
| AFA/x64/Setup64.exe | 4.2 MB | 3 Jan 2013 |
| CxAudMsg/CxAudMsg.ini | 3.2 KB | 1 Apr 2013 |
| CxAudMsg/CxAudMsg32.exe | 196.9 KB | 12 Dec 2012 |
| CxAudMsg/CxAudMsg64.exe | 205.6 KB | 12 Dec 2012 |
| CxAudMsg/Setup.exe | 3.2 MB | 1 Dec 2012 |
| CxAudMsg/x64/Setup64.exe | 4.2 MB | 1 Dec 2012 |
| DolbyGUI/DolbyAdvancedAudio.msi | 13.4 MB | 31 Aug 2012 |
| DolbyGUI/DolbyGUI.ini | 24.8 KB | 19 Jun 2013 |
| DolbyGUI/DolbySelectorTaskPatch.exe | 74.2 KB | 29 Oct 2012 |
| DolbyGUI/Setup.exe | 3.3 MB | 14 Dec 2012 |
| DolbyGUI/x64/setup64.exe | 4.2 MB | 14 Dec 2012 |
| ForteConfig/ForteConfig.ini | 6.0 KB | 6 Aug 2013 |
| ForteConfig/ForteConfig/WRT17AA5027.dat | 4.7 KB | 22 May 2013 |
| ForteConfig/ForteConfig/WRT17AA5028.dat | 2.8 KB | 31 Jul 2013 |
| ForteConfig/ForteConfig/WRT17AA502A.dat | 2.8 KB | 31 Jul 2013 |
| ForteConfig/ForteConfig/fmapp.exe | 49.6 KB | 26 Oct 2010 |
| ForteConfig/Setup.exe | 3.2 MB | 1 Dec 2012 |
| ForteConfig/x64/fmapp64.exe | 49.1 KB | 26 Oct 2010 |
| ForteConfig/x64/setup64.exe | 4.2 MB | 1 Dec 2012 |
| SAII/SA2Cmd.ini | 1.7 KB | 23 Sep 2013 |
| SAII/SA2DNoJR.ini | 750 bytes | 11 Mar 2013 |
| SAII/SA2EnFlt.ini | 1.3 KB | 24 Sep 2013 |
| SAII/SA2FFPLED.ini | 916 bytes | 11 Mar 2013 |
| SAII/SA2FMKS.ini | 911 bytes | 11 Mar 2013 |
| SAII/SA2HPL.ini | 269 bytes | 10 Jun 2013 |
| SAII/SA2JkCfg.ini | 742 bytes | 11 Mar 2013 |
| SAII/SA2LnApp.ini | 330 bytes | 2 Nov 2011 |
| SAII/SA2LnDlb.ini | 944 bytes | 14 May 2013 |
| SAII/SA2LnvJp.ini | 422 bytes | 13 Sep 2013 |
| SAII/SA2NGEN.ini | 649 bytes | 19 Jul 2010 |
| SAII/SA2NoJPU.ini | 760 bytes | 11 Mar 2013 |
| SAII/SA2NoSpkNR.ini | 998 bytes | 16 Apr 2013 |
| SAII/SA2OptReg.ini | 565 bytes | 19 Jul 2010 |
| SAII/SA2SAM.ini | 1.0 KB | 11 Mar 2013 |
| SAII/SA2Setup.ini | 2.4 KB | 23 Sep 2013 |
| SAII/SA2SmEq.INI | 54.5 KB | 19 Jul 2010 |
| SAII/SA2Srv5+.ini | 1.5 KB | 4 Apr 2011 |
| SAII/SA2VER.INI | 529 bytes | 2 May 2014 |
| SAII/SAII.ini | 5.5 KB | 29 Jan 2013 |
| SAII/SAII/CXHDMI.dll | 17.5 KB | 10 Dec 2009 |
| SAII/SAII/CxHDAudioAPI.dll | 1.1 MB | 5 Aug 2013 |
| SAII/SAII/Interop.CxHDAudioAPILib.dll | 118.8 KB | 5 Aug 2013 |
| SAII/SAII/LangDlls.cab | 29.5 MB | 23 Sep 2013 |
| SAII/SAII/LangDlls.cab/ar-AE/SmartAudio.resources.dll | 380.0 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/bg-BG/SmartAudio.resources.dll | 384.1 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/cs-CZ/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/da-DK/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/de-DE/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/el-GR/SmartAudio.resources.dll | 388.2 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/en-US/SmartAudio.resources.dll | 7.4 MB | 23 Sep 2013 |
| SAII/SAII/LangDlls.cab/es-ES/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/et-EE/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/fi-FI/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/fr-FR/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/he-IL/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/hr-HR/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/hu-HU/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/it-IT/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/ja-JP/SmartAudio.resources.dll | 380.0 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/ko-KR/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/lt-LT/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/lv-LV/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/nb-NO/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/nl-NL/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/pl-PL/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/pt-BR/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/pt-PT/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/ro-RO/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/ru-RU/SmartAudio.resources.dll | 384.1 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/sk-sk/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/sl-SI/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/sr-Latn-RS/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/sv-SE/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/th-TH/SmartAudio.resources.dll | 396.4 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/tr-TR/SmartAudio.resources.dll | 375.9 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/zh-CN/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/zh-Hans/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/zh-Hant/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/LangDlls.cab/zh-TW/SmartAudio.resources.dll | 371.8 KB | 14 Jan 2013 |
| SAII/SAII/Microsoft.Windows.Shell.dll | 155.4 KB | 23 Sep 2013 |
| SAII/SAII/SACmd32.exe | 1.8 MB | 29 Aug 2013 |
| SAII/SAII/SACmd64.exe | 2.3 MB | 29 Aug 2013 |
| SAII/SAII/SACpl.exe | 1.6 MB | 13 Jun 2012 |
| SAII/SAII/SASrv.exe | 447.1 KB | 1 Sep 2011 |
| SAII/SAII/SmartAudio.ForteMedia.dll | 197.8 KB | 23 Aug 2013 |
| SAII/SAII/SmartAudio.Net40.dll | 14.6 KB | 23 Sep 2013 |
| SAII/SAII/SmartAudio.exe | 1.0 MB | 23 Sep 2013 |
| SAII/SAII/SmartAudio.exe.config | 256 bytes | 15 Jul 2013 |
| SAII/SAII/WaveSamples.cab | 2.4 MB | 23 Sep 2013 |
| SAII/SAII/WaveSamples.cab/BlueStream.wav | 113.6 KB | 5 Jun 2012 |
| SAII/SAII/WaveSamples.cab/CenterSpeakerStream.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/LeftSpeakerStream.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/RearLeftSpeakerStream.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/RearLeftSpeakerStreamQuad.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/RearRightSpeakerStream.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/RearRightSpeakerStreamQuad.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/RedStream.wav | 114.7 KB | 15 Aug 2013 |
| SAII/SAII/WaveSamples.cab/RightSpeakerStream.wav | 1.3 MB | 20 Jan 2011 |
| SAII/SAII/WaveSamples.cab/SubwooferStream.wav | 1.4 MB | 20 Jan 2011 |
| SAII/Setup.exe | 3.3 MB | 13 Dec 2012 |
| SAII/x64/Setup64.exe | 4.2 MB | 13 Dec 2012 |
| Setup.exe | 3.3 MB | 30 Aug 2013 |
| W8-32/ALTMIXER.INI | 1.8 KB | 28 Oct 2010 |
| W8-32/BIT_CLK.ini | 1.6 KB | 13 Sep 2013 |
| W8-32/C3DHPExt32.dll | 653.4 KB | 16 Jan 2012 |
| W8-32/CHDRT32.sys | 1.4 MB | 26 Aug 2013 |
| W8-32/CSpkExt32.dll | 397.5 KB | 15 May 2013 |
| W8-32/CX32AP85.dll | 1.7 MB | 3 Sep 2013 |
| W8-32/CxPageMaster32.dll | 43.7 KB | 29 Jun 2012 |
| W8-32/DIFxAPI.dll | 320.0 KB | 1 Oct 2006 |
| W8-32/E13CC2xa.inf | 141.0 KB | 3 Sep 2013 |
| W8-32/EEA32A.dll | 91.9 KB | 31 Aug 2012 |
| W8-32/EED32A.dll | 352.0 KB | 31 Aug 2012 |
| W8-32/EEG32A.dll | 62.2 KB | 31 Aug 2012 |
| W8-32/EEL32A.dll | 106.8 KB | 31 Aug 2012 |
| W8-32/EEP32A.dll | 7.2 MB | 31 Aug 2012 |
| W8-32/FMAPO.dll | 2.4 MB | 25 Jan 2013 |
| W8-32/FXMisc.ini | 3.4 KB | 17 Dec 2013 |
| W8-32/HPLimit.ini | 2.1 KB | 2 May 2014 |
| W8-32/MIXER.INI | 30.9 KB | 18 Jan 2011 |
| W8-32/MicGain.ini | 4.2 KB | 31 May 2013 |
| W8-32/Misc.ini | 1.7 KB | 13 Aug 2013 |
| W8-32/PCEE4Parm.ini | 22.8 KB | 27 Mar 2013 |
| W8-32/PortDBoost.ini | 1.8 KB | 18 Sep 2013 |
| W8-32/SA2syncLenovoVR.ini | 857 bytes | 3 Sep 2013 |
| W8-32/SPKVol.ini | 2.7 KB | 13 Sep 2013 |
| W8-32/UCI32A41.dll | 2.1 MB | 30 Aug 2013 |
| W8-32/UIU32a.exe | 3.3 MB | 30 Aug 2013 |
| W8-32/e13cc2xa.cat | 100.4 KB | 13 Sep 2013 |
| W8-32/inst_apps.ini | 371 bytes | 4 Dec 2012 |
| W8-32/inst_dolbygui.ini | 510 bytes | 9 May 2013 |
| W8-64/ALTMIXER.INI | 1.8 KB | 28 Oct 2010 |
| W8-64/BIT_CLK.ini | 1.6 KB | 13 Sep 2013 |
| W8-64/C3DHPExt64.dll | 666.2 KB | 16 Jan 2012 |
| W8-64/CHDRT64.sys | 1.7 MB | 26 Aug 2013 |
| W8-64/CSpkExt64.dll | 406.2 KB | 15 May 2013 |
| W8-64/CX64AP85.dll | 1.8 MB | 3 Sep 2013 |
| W8-64/CxPageMaster64.dll | 50.8 KB | 29 Jun 2012 |
| W8-64/DIFxAPI.dll | 524.8 KB | 1 Oct 2006 |
| W8-64/E13CC2wa.inf | 141.3 KB | 3 Sep 2013 |
| W8-64/EEA64A.dll | 124.2 KB | 31 Aug 2012 |
| W8-64/EED64A.dll | 435.0 KB | 31 Aug 2012 |
| W8-64/EEG64A.dll | 75.0 KB | 31 Aug 2012 |
| W8-64/EEL64A.dll | 141.6 KB | 31 Aug 2012 |
| W8-64/EEP64A.dll | 7.2 MB | 31 Aug 2012 |
| W8-64/FMAPO64.dll | 2.7 MB | 25 Jan 2013 |
| W8-64/FXMisc.ini | 3.4 KB | 17 Dec 2013 |
| W8-64/HPLimit.ini | 2.1 KB | 2 May 2014 |
| W8-64/MIXER.INI | 30.9 KB | 18 Jan 2011 |
| W8-64/MicGain.ini | 4.2 KB | 31 May 2013 |
| W8-64/Misc.ini | 1.7 KB | 13 Aug 2013 |
| W8-64/PCEE4Parm.ini | 22.8 KB | 27 Mar 2013 |
| W8-64/PortDBoost.ini | 1.8 KB | 18 Sep 2013 |
| W8-64/SA2syncLenovoVR.ini | 857 bytes | 3 Sep 2013 |
| W8-64/SPKVol.ini | 2.7 KB | 13 Aug 2013 |
| W8-64/UCI64A41.dll | 2.8 MB | 30 Aug 2013 |
| W8-64/UIU64a.exe | 4.3 MB | 30 Aug 2013 |
| W8-64/e13cc2wa.cat | 106.1 KB | 13 Sep 2013 |
| W8-64/inst_apps.ini | 371 bytes | 4 Dec 2012 |
| W8-64/inst_dolbygui.ini | 510 bytes | 9 May 2013 |
| setup.ini | 347 bytes | 17 Sep 2012 |
How to Update Lenovo B4400s Device Drivers Quickly & Easily
Step 1 - Download Your Driver
To get the Lenovo B4400s driver, click the green download button above. After you complete your download, move on to Step 2.
If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Lenovo B4400s into the search box above and then submit. In the results, choose the best match for your PC and operating system.
Tech Tip: If you are having trouble deciding which is the right driver, try the Lenovo Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.
To find the newest driver, you may need to visit the Lenovo website. Most major device manufacturers update their drivers regularly.
Step 2 - Install Your Driver
Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.
How to Open Device Manager
In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager
In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager
In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager
In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager
In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button
How to Install a driver from Device Manager
Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.
Select the Driver tab.
Click the Update Driver button and follow the instructions.
In most cases, you will need to reboot your computer in order for the driver update to take effect.
Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.
For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.