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The chipset inside the JS704S2 is a generic one (often from a company like Weltrend or Sino Wealth). Use a tool like USBDeview to find the VID (Vendor ID) and PID (Product ID) , then search for drivers using those hex codes (e.g., VID_1234&PID_5678 ).

Yes, but with limitations. The UC JS704S2 lacks the precision and button count for MSFS 2020. It works better for FSX, IL-2 Sturmovik, or retro arcade emulators.

Since Ucom does not maintain a central official website for driver downloads, users typically rely on standard USB gamepad drivers or third-party repositories.

If Method 1 fails (or if vibration does not work), the Ucom JS704S2 usually runs on a generic USB Gamepad driver used by many similar controllers.

Unlike major brands (Logitech, Thrustmaster), Ucom does not host drivers on a central website for this legacy model.

Ucom Uc Js704s2 Usb Joystick Driver Win 7 Download