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Drivers for Prolific USB to serial converters
This download is not a set of driver files, but an installer program that installs the driver automatically.
Please be sure to follow this sequence:-
1. Disconnect the USB to Serial Converter.
2. Download and run this installer.
3. Restart Windows if requested.
4. Connect the USB to Serial Converter.
Click here for the driver for the newer type.
If the driver installer doesn’t work, please try the alternative driver. This is a set of driver files that must first be unzipped into a new folder.