Welcome to our store！</br> 1、High Compatibility: Suitable for RPi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B and many other 40pin for RPi models to meet different user needs. 2、Convenient Connections: Easily connect for RPi GPIOs and power supplies to peripheral devices via 8 RJ45 sockets, providing a full range of expansion capabilities for your for RPi. 3、Flexible Power Supply: Each RJ45 port supports independent selection of for RPi 5V 3.3V or blue terminal power supply to meet the power needs of external devices. 4、GPIO Pin Connection: Each of the 8 ports supports different interfaces such as UART, SPI, GPIO and I2C, making it easy for you to interact with more peripheral devices with for RPi. 5、Expansion Pin Design: Equipped with 2x20pin expansion pins, it is convenient for you to expand more peripherals of for RPi to meet more innovative and practical needs. <p class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text"> <p class="wang-edit-text"> Item Type:&nbsp;for&nbsp;RPi&nbsp;Breakout&nbsp;Board Material: PCB Number of RJ45 Ports: 8 Expansion Pin: 20pin x 2 Applicable Models: for RPi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B RJ45 GPIO Interface. Port 1: UART(RXD TXD) GPIO17 GPIO4 Port 2: SPI(SCLK CE0 MISO MOSI) Port 3: GPIO6 GPIO12 GPIO5 CE1 Port 4: GPIO21 GPIO26 GPIO20 GPIO19 Port 5: I2C(SDA, SCL) GPIO18 GPIO27 Port 6: I2C(SDA, SCL) GPIO23 GPIO22 Port 7: I2C(SDA, SCL) GPIO24 GPIO25 Port 8: I2C(SDA, SCL) GPIO13 GPIO16 <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x for&nbsp;RPi&nbsp;Breakout&nbsp;Board&nbsp;&nbsp;&nbsp; Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>