Try the suggestion posted by Repsej on this thread: https://answers.microsoft.com/en-us/windows/forum/windows\_7-hardware/driver-problem-with-prolific-usb-to-serial/0e4967f9-1367-4012-90ba-40c75107f9e0?auth=1
Installing an rs232 to USB driver on Windows 7
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Anonymous
I cannot get Windows 7 to recognize a rs232 to USB converter. It works perfectly on Windows XP on another computer so I would assume the the driver is not correct ot installed correctly. The device is recognized when plugged in but does not function on WIndows 7. I have already disabled the Windows 7 driver signature and that did not work. Any help on finding the correct driver or installing it properly would be greatly appreciated.
Windows for home | Previous Windows versions | Devices and drivers
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Anonymous
2017-10-15T14:40:36+00:00