After restart my computer,my computer freezes up if have the device plugged in.

Solution

After restart my computer,my computer freezes up if have the device plugged in.

Your driver is not installed correctly, please uninstall the driver and re-install it again correctly.
Or simply install the latest driver.
It's better to unplug the converter during the installation and the uninstallation.
http://www.chinagameware.com/display/ft8d91_ps2_xbox_gc_to_pc-usb_converter.shtml

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