English TL;DR: You need to set exactly the same default format (sample rate and bit depth) for both the input and output device of US-366 in Windows audio configuration. If they have different configs, one of them will be randomly unavailable.
近日购买了一台
When using a non-ASIO driver with a recording application, the same sampling rate setting must be used in the Properties settings of both the Recording and Playback tabs of the Sound Control Panel and in the project settings of the recording application.
也就是说在使用一般的音频播放软件播放时