Now I do some test. The system for test hardware is no able to "After a few seconds, your speech will be played back to you." so I not hear something. However, the applications work properly, including Skype calls. The problem maybe is the software for testing.
Now I do some test. The system for test hardware is no able to "After a few seconds, your speech will be played back to you." so I not hear something. However, the applications work properly, including Skype calls. The problem maybe is the software for testing.