VersionTech Stereo Gaming Headset (VCG1000-L1) Not Working

My VersionTech Stereo Gaming Headset (VCG1000-L1) headset microphone won’t work with Audacity, does anyone know why?

Does it work with other applications?

What kind of connections does it have? USB? A single 3.5mm combo plug for the mic & headphones? Separate analog mic & headphone connections?