Hardware volume of the built-in mono speaker. Audio streaming is not implemented.
Last requested raw HID volume (0-255), or null before configuration/after reset. This is a local cache, not a hardware readback or acknowledgement.
Set a raw HID volume byte. Finite values are clamped to 0-255 and rounded. Resolves when the HID report is sent; rejects on output failure or reset.
Hardware volume of the built-in mono speaker. Audio streaming is not implemented.