NADAC D’s USB port supports the standard UAC 2.0 protocol (USB Audio Class 2.0) and can be used on Windows OS using the Windows driver provided by MF, available in the resource section of the NADAC D page: https://www.master-fidelity.com/nadac-d/#resources Currently, NADAC D supports Windows 10 64-bit and Windows 11 64-bit. It also supports Windows 7 32-bit/64-bit and Windows 8/8.1 64-bit, but since Microsoft has discontinued support, compatibility issues may occur. You’ll need to test your system carefully before choosing the correct version.