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Quantum Technologies (now defunct) released this gamepad in 2016 as a low-cost alternative to the DualShock 4. When Windows 10 introduced strict driver signature enforcement and the new GameInput API, Quantum's small engineering team chose not to recertify the drivers. Instead, they released the source code snippets on a now-dead forum (QuantumDev.net). The community has kept the hardware alive using those original code fragments.
The "repack" versions of the driver often combine the original installation software with compatibility patches for modern operating systems. You can find the driver through several reliable sources: Quantum QHM7487-2V C Game Pad - Amazon.in quantum qhm74872vc usb gamepad driver repack
A standard driver from an official CD or a raw INF file may fail to install on modern OSes like Windows 10 or 11, especially if the manufacturer no longer supports the device. A typically means: Quantum Technologies (now defunct) released this gamepad in
This is a registry mapping bug. Run the Fix_Quantum_Triggers.reg file included in the repack. Reboot. The community has kept the hardware alive using
tab to adjust "Left Force" and "Right Force" vibration intensity. Calibration function if the joysticks are not centering correctly. Troubleshooting Controller Not Working in Modern Games: