If your PC is lacking a serial port, or all the available are already used by other devices, you can easily add one RS-232 serial port to control the CLIO SC-01 Signal Conditioner buying an USB-to-Serial adapter.
This unit, that usually takes the form of a normal cable (with the electronics housed inside the connector itself), can be found from any computer shop (for example from CDW at www.cdw.com part n. 297778); the installation is straightforward and no software changes are required.