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On some computers, more recent releases of Windows may require a newer USB to serial converter. The older and newer models may be distinguished by the length of cable.

USB to serial converter models

Old model USB converter New model USB converter

The older model has a Prolific chipset and a cable length of more than 50 cm (20”).

The newer model has an FTDI chipset and a cable length of less than 20 cm (8”).

On some computers, when the older model is used with newer releases of Windows, a variety of reported problems have been fixed by using a new model converter. Please see our troubleshooting guide before purchasing a new converter, in case your problem has a different cause.

Update the driver for your USB to serial converter here.

To return to Cable Links Troubleshooting, click here.