Because the chip is HID (Human Interface Device) compliant, it relies on generic drivers included in the operating system rather than a custom driver from Microntek.
A: The generic driver works. Legacy signed drivers (version 2.1.0.8) work in compatibility mode (Windows 8). Unsigned drivers fail. microntek usb joystick driver
Blue dual-port PS2-to-USB adapters frequently rely on this specific driver to recognize both plugged-in controllers. Because the chip is HID (Human Interface Device)