The analog switch or D-pad might register incorrect inputs.
Ucom UC-JS704S2 USB Joystick Driver Windows 7: Download and Installation Guide ucom uc js704s2 usb joystick driver win 7 download link
Given the potential for maliciously modified drivers on unofficial sites, avoid mirror sites or torrent sources. If the device is HID-compliant, relying on Windows’ in-box driver is safer and often sufficient. The analog switch or D-pad might register incorrect inputs
Open the extracted folder, locate the setup.exe or install.exe file, right-click it, and choose Run as administrator . locate the setup.exe or install.exe file
After restarting, plug the Ucom UC-JS704S2 USB cable directly into a motherboard port on your PC (avoid unpowered front-panel USB hubs). Calibrate via Windows Control Panel
Dedicated control panels allow you to calibrate or swap buttons outside of standard game menus. Where to Download the UCOM UC-JS704S2 Driver