Can anyone help me with this? I have installed Parallels 15 Desktop and Windows 10 on a mid 2011 Mac running High Sierra. I have connected a new HC6 MPOW wired headset via USB. The speakers and Mic work fine in both MAC and Windows. However, the keyboard volume control and the volume control on the headset will not work on Windows. They control the MAC OK, but the only way to adjust the volume on Windows is by using the small speaker icon bottom right. Ideally I would like to use the keyboard or the one on the headset.