What's "OpenDevByIndex" ? Typo? I don't see any such method. Assuming it's a typo, does $FTDIdev->OpenByIndex(1) return 1? Did you try turning on PFT_DEBUG?

In reply to Re^7: Problem Writing to FTDI COM Port using Win32::FTDI::FTD2XX by kschwab
in thread Problem Writing to FTDI COM Port using Win32::FTDI::FTD2XX by PrfrrdUsrNm

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