win8.1 64-bit solve the computer cannot use USB to serial port situation

first, plug in after USB to the serial cable, the Device Manager prompts for an exclamation mark,

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Ii. Solutions

1, first in the device management, right-click the USB to serial Port driver properties, uninstall the existing USB to serial port program;

2, the computer to the right of the search box, search "Change device installation Settings", click Click to enter

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2.go to the "Change installation Settings" screen, select the option in the Red box and click "Save Changes"

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3 Install the downloaded pl2303 Span style= "font-family: ' The song body '; color: #333333; background: #FFFFFF;" > drive Click Next to install successfully, insert after installation is complete. usb Turn the serial port to the wiring Span style= "font-family: ' The song body '; color: #333333; background: #FFFFFF;" > You can see the

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4, because the WINDOWS update driver is disabled , Other hardware drivers can not be updated, but also a disadvantage, so re-enter the " Change device installation settings interface ", select the Red box options, and "Save Changes".

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5, again into the USB to serial cable, enter the "Device Manager", due to Automatic Updates,USB to the serial cable driver will be automatically updated to the new version, or there will be * * * exclamation. Right click again into the USB to serial Port drive properties, select "Driver", as follows, select Rollback to the installed driver, the above driver information back to the installed version, verified that my computer restarts, plugged into the USB to serial cable, can be used normally.

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Reference Method Links:http://tieba.baidu.com/p/2378715876

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win8.1 64-bit solve the computer cannot use USB to serial port situation