If you are having trouble loading the drivers for the programming cable,please copy and paste the link 
to your URL       http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41
This will allow you to down load the drivers direct.

Copy and paste to View link to youtube for reverance    https://www.youtube.com/watch?v=-8cojWp8qY0