In fairness to SparkFun the Leonardo I'm using although labelled SparkFun is off ebay from Hong Kong say may be a clone for approx $5 so may require this different / later driver.
Successfully connected and downloaded blink (using led on RX Led Pin 17) and works well.
As a matter of interest I tried this board after continual frustration using Pro Mini boards with external FTDI interface with the reset problem when downloading.