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USB-to-Serial Converter

USB-to-Serial Converter Driver Download:
CDM v2.12.24 WHQL Certified.zip (release date: 2016/10/10)

FTDI USB driverFTDI Driver for USB-to-Serial converter (Optec stock #17690). Remove any previously installed FTDI drivers using the FTDI Uninstaller Program below.   This WHQL Certified driver is designed for use with Windows 10 or earlier 32-bit and 64-bit operating systems.  Click the download button at right to download, unzip to a temporary folder.  Open the folder, right-click the setup.exe file and "Run as Administrator" to install.

Download USB-to-Serial drivers
Click here to review the latest release notes: FTDI Release Notes
FTDI USB driverFTDI Uninstaller Program, version 1.4.  Try this uninstaller program when the Windows Add/Remove Programs feature does not properly remove the FTDI USB-to-serial drivers.  The USB-to-serial devices used by Optec have a VID=0403 and PID=6001.  Multiple converter devices can be used with just one driver. 

Instructions for using the FTDI CDM driver uninstaller can be found here on the FTDI Website.
Known Technical Issues:
Language Issues with Liberty Basic complier.
NOTE: There is a known compatiblity issue running the IFW Control program on computers set for Chinese, Korean and Japanese localization. Optec recommends the default language be set for ENGLISH when operating IFW Control.
USB-to-Serial Converter Issues.
NOTE:  If a native COM port is not available on the control computer, a USB-to-serial converter may be used.  To maintain compatiblity with the older IFW Control program, Optec recommends a converter based on the FTDI chipset.
Compatibility Issues with Vista, Windows 7, and Windows 8.1
NOTE: Due to an incompatiblity issue involving user rights with Vista, Windows 7, or Windows 8.1 the user may see a complier error stating "Handles closed by Liberty Basic".   The error arises when the control program attempts to write to a configuration file located where the user may not have full administrative rights.  This issue only concerns the older IFW program and can be avoided by setting the current user with full administrative rights.  Alternatively, the IFW program may be installed directly to the user's desktop (or copied from the default install folder: C:\Program Files (x86)\Optec\IFW Control).  Run the IFW.exe program directly from this desktop folder to avoid the complier error.
Contact Optec Technical Support if the problem persists.
NOTE:  Microsoft discontinued providing WinHlp32.exe with Vista.  The IFW Control program  of the Optec programs still use this older version of help and may require this file be added back into the operating system.
For Vista users, click here to download the WinHlp32.exe installer from Microsoft.
For Windows 7 users, click here to download the WinHlp32.exe installer from Microsoft.
For Windows 8.1 users, click here to download the WinHlp32.exe installer from Microsoft.