If your PC recognizes the device but the buttons or vibration aren't working:
: Offers the HV-G69-Single USB Gamepad.exe driver, which is compatible with the 704 series and specifically enables vibration on Windows 7 (32-bit and 64-bit). ucom uc js704s2 usb joystick driver win 7 download link
UCOM UC-JS704S2 is a legacy USB "Double Shock" joypad primarily designed for older Windows systems. While officially advertised as "Plug and Play," users frequently encounter compatibility issues on Windows 7, particularly with vibration feedback and analog stick mapping. Download Links for Windows 7 If your PC recognizes the device but the