Hardware - ReSpeaker 2-Mics Pi HAT v1 Features: Support the Raspberry Pi 3B,4B Two microphones (Mic L and Mic R) Two Grove connectors One User-defined button 3.5mm audio interface XH2.54-2P audio output interface Order Base: Raspberry Pi Zero 2 W SD-Card US MicroUSB Power Supply Cable for Speaker ReSpeaker 2-Mics Pi HAT v1 ReSpeaker 2Mic HAT Additional information: Wiki Keyestudio documentation