Features:
1)Support the Raspberry Pi 5/4/B+, Raspberry Pi 2B /3B/ 4B/Pi Zero 2W.
Note it doesn't work with Raspberry Pi Zero W.
2)Two microphones (Mic L and Mic R)
3)Two Grove connectors
4)One User-defined button
5)3.5mm audio interface
6)XH2.54-2PIN audio output connector

Interface Explanations:
1)Button: default connected to GPIO17
2)Mic L and Mic R: microphone (labeled LEFT and RIGHT)
3)RGB LED: three APA102 RGB LEDs, connected to the SPI interface of Raspberry Pi.
4)WM8960: Low Power Stereo Codec
5)Raspberry Pi 40 pin header: support the Raspberry Pi 1 B+, Raspberry Pi 2B 3B and Pi 4.
6)POWER: Micro USB port that powers the ReSpeaker 2-Mic Pi HAT. Power the circuit board to supply enough current when use the speaker.
7)I2C: Grove I2C port, connected to I2C-1
8)GPIO12: Grove digital port, connected to GPIO12 and GPIO13
9)XH2.54-2PIN SPEAKER OUT: connecting speakers
10)3.5mm audio jack: connecting headphones or speakers with 3.5mm audio plug

Package List:
KEYESTUDIO ReSpeaker 2-Mic Pi HAT Shield *2