Before diving into drivers, it is crucial to understand that is rarely a specific product name. Instead, it is a silkscreen label found on generic Chinese-manufactured USB devices. Common devices bearing this label include:
If you are comfortable with soldering, desolder the old unidentified USB-to-UART chip and replace it with an FTDI FT232RL. Then install FTDI drivers. gzcyc no 9700 driver for windows 7