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Edit by Walter Galan

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[* black] The back of the motherboard may look bare, but upon closer inspection we found two microphones:
[* red] Wolfson Microelectronics [link|http://www.wolfsonmicro.com/documents/uploads/data_sheets/en/WM7121_1.pdf|WM7121|new_window=true] Top Port Analogue Silicon Microphone
[* blackorange] Wolfson Microelectronics [link|http://www.wolfsonmicro.com/documents/uploads/data_sheets/en/WM7132.pdf|WM7132|new_window=true] Bottom Port Analogue Silicon Microphone
[* blackorange] Wolfson Microelectronics [link|http://www.wolfsonmicro.com/documents/uploads/data_sheets/en/WM7132.pdf|WM7132|new_window=true] Bottom Port Analogue Silicon Microphone