System-Defined Device Setup Classes Available to Vendors - Windows driversDevice categories and class values Audio Processing Objects (APOs) Class = AudioProcessingObject ClassGuid = {5989fce8-9cd0-467d-8a6a-5419e31529d4} This class includes Audio processing objects (APOs). For more info, see Windows Audio Processing Objects. Battery Devices Class = Battery ClassGuid = {72631e54-78a4-11d0-bcf7-00aa00b7b32a} This class includes battery devices and UPS devices. Biometric
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