There aren't any 64 bit drivers for it available, at least publicly. You can email their support and request them.

Hopefully they'll hook you up.

Best of luck!

--RescueTechLA
Answer from Anonymous on fixya.com
🌐
Solvusoft
solvusoft.com › en › update › drivers › software › belkin-components › f5u109 › sub-models
Belkin Components F5U109 Drivers Download - Update Belkin Components Software (Software)
Your baseline F5U109 drivers should be bundled within %%os%%, or downloadable through Windows® update. The built-in driver supports the basic functions of your F5U109 hardware. Our Belkin Components driver update instructions provide all of ...
🌐
Belkin
belkin.com › us › support-article
Live Chat, User Guides, FAQs & More | Belkin Support US
Have questions? Find the answers you need via our comprehensive FAQs and user guides. Need additional assistance? Contact our customer support team for help.
Discussions

Belkin F5U109 USB PDA Adapter
Thank you for this information. The driver works great with my Belkin f5u109 on windows 7 64-bit!! More on answers.microsoft.com
🌐 answers.microsoft.com
15
54
July 13, 2011
Belkin F5U109 USB PDA Adapter
Thank you for this information. The driver works great with my Belkin f5u109 on windows 7 64-bit!! More on learn.microsoft.com
🌐 learn.microsoft.com
15
54
Belkin F5U109 USB to serial adapter
According to Belkin : Support : F5U109/F5U409 USB PDA Adapter - Drivers it will work in Vista 64, but no mention of W7. ... The device does work in windows 7 (32bit & 64 bit drivers, just not with belkin's drivers. See this site for details: How to use a Belkin F5U409/F5U409-CU USB To PDA Serial Converter in Visa/Windows 7 64bit & Mac OSX 10 ... More on forums.radioreference.com
🌐 forums.radioreference.com
6
November 28, 2009
Belkin F5U109 (serial to usb adapter) driver
https://answers.microsoft.com/en-us/windows/forum/all/belkin-f5u109-usb-pda-adapter/595f1fc7-0546-4c1e-9ff4-fcf51278c23a More on reddit.com
🌐 r/instrumentation
6
4
June 18, 2025
🌐
DriverGuide
driverguide.com › driver › detail.php
Download Belkin Drivers for Windows 11, 10, 8, 7, XP, Vista
To get the latest driver, including Windows 11 drivers, you can choose from the above list of most popular Belkin downloads. Click the "Download driver" button next to the matching model name.
🌐
Nt4
nt4.com › drivers › belkin › F5U109.F5U409
Belkin : Support F5U109/F5U409 USB PDA Adapter - Drivers
Download Windows Vista/7 64bit -- see http://www.clearchain.com/blog/posts/how-to-use-a-belkin-f5u409f5u409-cu-usb-to-pda-serial-converter-in-visawindows-7-64bit-mac-osx-10 · Download Version: --, OS compatibility: Mac OS 8.X, Mac OS 9.X, size: 189 KB ... Download Generic Windows XP, Windows Vista, Windows 7, Windows 8, Server 2003 (2k3), Server 2008 (2k8) (R2) 32/64-bit drivers
🌐
Auditiva
auditiva.us › downloads › drivers
Drivers
Belkin-USBSerialAdapter-Driver-F5U109-v2.05.120705-win7-win8-64bit.exe (3871032 bytes)
Find elsewhere
🌐
ClearChain
clearchain.com › home › solution: belkin f5u409 usb to serial converter in 64bit windows 7/vista/mac osx 10
Solution: Belkin F5U409 USB to Serial Converter in 64bit Windows 7/Vista/Mac OSX 10 - ClearChain
March 24, 2013 - After a contracted company installed our weather station, they left us with the Belkin F5U109 USB-to-Serial adapter. With all of our units running 64-bit, this driver is truly a wonderful find.
🌐
RadioReference.com
forums.radioreference.com › scanners, receivers and related equipment forums › uniden forums › uniden thread archives
Belkin F5U109 USB to serial adapter | RadioReference.com Forums
November 28, 2009 - ... The device does work in windows 7 (32bit & 64 bit drivers, just not with belkin's drivers. See this site for details: How to use a Belkin F5U409/F5U409-CU USB To PDA Serial Converter in Visa/Windows 7 64bit & Mac OSX 10 ...
🌐
Semantic
semantic.gs › belkin_f5u109_driver_download_2016
semantic.gs
semantic web tools,knowledge graph integration,linked data tutorials
🌐
Software Informer
belkin-f5u109.software.informer.com › windows › general › belkin f5u109
BELKIN F5U109. Get the software safely and easily.
August 28, 2025 - For best results, install the driver before connecting the adapter. The F5U109 hardware is required; refer to Belkin’s support resources for specific operating system compatibility and the latest updates. BELKIN F5U109 is developed by Belkin Components and is used by 4 users of Software Informer. The most popular version of this product among our users is 2.0. The names of program executable files are Belkin HomePlug Utility.exe, Belkinwcui.exe and Removeinstall.exe.
🌐
Updatestar
belkin-f5u109.updatestar.com › home › system utilities › belkin f5u109
BELKIN F5U109 - Download
BELKIN F5U109 2.1
Download BELKIN F5U109 2.1, free, virus-checked. The BELKIN F5U109 offers an efficient and reliable solution for users needing extra USB ports, enhancing …
Rating: 4 ​
🌐
Driverscape
driverscape.com › download › belkin-usb-to-serial-adapter
Belkin USB-to-Serial Adapter Drivers Download for Windows 10, 8.1, 7, Vista, XP
Use the links on this page to download the latest version of Belkin USB-to-Serial Adapter drivers. All drivers available for download have been scanned by antivirus program. Please choose the relevant version according to your computer's operating system and click the download button. ... Supported OS: Windows 10 64 bit, Windows 8.1 64bit, Windows 7 64bit, Windows Vista 64bit, Windows XP 64bit
🌐
Softpedia
drivers.softpedia.com › downloadTag › Belkin+Driver
Belkin Driver and related drivers - Softpedia
Unix, Windows All, Mac, Linux, Windows Server 2025, Windows 11, Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows 10 64 bit, Windows 10, Windows 8.1 64 bit, Windows 8.1, OS Independent, Windows Server 2012, Android, Windows 8 64 bit, Windows 8, Windows 7 64 bit, Windows 7, Windows Vista 64 bit, Windows 2008, Windows XP 64 bit, Windows Vista, Windows 2003, Windows XP, Windows 2K, Windows NT, Windows ME, Windows 9X Nov 8th 2006, 08:19 GMT
🌐
Audina
audina.net › en › professional › drivers
Audina - Drivers
Belkin-USBSerialAdapter-Driver-F5U109-v2.05.120705-win7-win8-64bit.exe (4MB) CableCreation-CD0486-FTDI-FT232RL.exe (2MB) Cablemax-usb-serial-adapter-Win2K.XP.Vista.7-drv2.08.02.exe (2MB) DebugTools.zip (3MB) EMiniTec-Win98.2k.XP.Vista.7-drv-2.08.24-2012-04-26.exe (2MB) EMiniTec2_Win81_PM_20140724.zip (1MB) Gigaware-USB-A-SerialAdapter-Drivers-20080625-v2600949.exe (6MB) HI-PRO-4.0-Installation-2012-WinXP-WinVista-Win7.zip (75MB) IObitUnlockerPortable_1.1.paf.exe (1MB) Keyspan-USA19HS-driver-4-Win10.exe (6MB) NoahlinkWireless_V.1.1.0.0.exe (15MB) ProcessExplorer.zip (1MB) Prolific_PL2303_DriverInstaller_v1.5.0.exe (3MB) Prolific_Win8_x64_x86.zip (1MB) Sabrent-CB-FTDI - Windows Drivers.exe (2MB) Sabrent-USB-Serial-Prolific-driver-Windows.zip (8MB) Staples-USB-Serial-Adapter-driver-18762_32bit-64bit_setup.exe (4MB) TRENDnet-TU-S9-driver-v2.0R-win7.zip (4MB) Unlocker1.9.2.exe (1MB)