Visit the Prolific Official Website and look for the "PL2303 USB to Serial" driver.
: For users managing multiple devices or seeking a modernized interface, the Universal Print Driver v4 (UPDv4) provides a single solution that eliminates the need for individual driver installations for every product on your network.
Only install the C-Media utility if you need the visual EQ or surround sound. Otherwise, plug it in and enjoy your cheap, functional USB audio.
For SATA/IDE to USB adapters like the KA301, try: