If you had got your Sonnet Tango unit without any SD14 SLR driver CD or the latter is lost, you may choose to follow the links below. Without a special Sonnet Tango driver to your unit, you won’t be able to use all its Sigma functionality. The basic SD14 SLR driver from Windows is only able to support the minimum FinePix A203 set thereof. You are really in need of a fully-featured authentic SD14 SLR driver.
For Sonnet Tango download, please just follow the Radeon X1050 link.