![Amazon.com: XICOOLEE MCP23017 I/O Expansion Board Module SG-IO-E017, 16 I/O Pins Supports for Raspberry Pi Series, Onboard 3-Digit DIP Switch, I2C Interface Compatible with 3.3V/5V Working Level : Electronics Amazon.com: XICOOLEE MCP23017 I/O Expansion Board Module SG-IO-E017, 16 I/O Pins Supports for Raspberry Pi Series, Onboard 3-Digit DIP Switch, I2C Interface Compatible with 3.3V/5V Working Level : Electronics](https://m.media-amazon.com/images/I/61Xi7QeNnTL._AC_UF894,1000_QL80_.jpg)
Amazon.com: XICOOLEE MCP23017 I/O Expansion Board Module SG-IO-E017, 16 I/O Pins Supports for Raspberry Pi Series, Onboard 3-Digit DIP Switch, I2C Interface Compatible with 3.3V/5V Working Level : Electronics
![MCP23017 Datasheet: 16-Bit Expander for 5G and High Speed Applications - Free Online PCB CAD Library MCP23017 Datasheet: 16-Bit Expander for 5G and High Speed Applications - Free Online PCB CAD Library](https://www.ultralibrarian.com/wp-content/uploads/2023/01/MCP23017-N2X-Regular.jpg)
MCP23017 Datasheet: 16-Bit Expander for 5G and High Speed Applications - Free Online PCB CAD Library
![Adafruit MCP23017 I2C GPIO Expander Breakout [STEMMA QT / Qwiic] : ID 5346 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits Adafruit MCP23017 I2C GPIO Expander Breakout [STEMMA QT / Qwiic] : ID 5346 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits](http://www.adafruit.com/images/480x360/5346-05.jpg)