---
product_id: 258003698
title: "RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W"
brand: "oono"
price: "S$44"
currency: SGD
in_stock: true
reviews_count: 3
category: "Oono"
url: https://www.desertcart.sg/products/258003698-rj45-gpio-pinout-breakout-board-for-raspberry-pi-1a-1b
store_origin: SG
region: Singapore
---

# Selectable 5V/3.3V power per port 8 RJ45 ports for versatile GPIO & power Compatible with all 40-pin Raspberry Pi models RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W

**Brand:** oono
**Price:** S$44
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect Smarter, Prototype Faster — The Ultimate GPIO Breakout for Raspberry Pi Pros

## Quick Answers

- **What is this?** RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W by oono
- **How much does it cost?** S$44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/258003698-rj45-gpio-pinout-breakout-board-for-raspberry-pi-1a-1b)

## Best For

- oono enthusiasts

## Why This Product

- Trusted oono brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dedicated Protocol Ports:** Easily access UART, SPI, and multiple I2C buses across ports for seamless sensor and device integration.
- • **Customizable Power Delivery:** Independently switch each port’s power source between 5V, 3.3V, or external supply for ultimate flexibility.
- • **Complete Mounting Kit Included:** Comes with brass standoffs, screws, and pin jumpers — everything you need to build a clean, professional setup.
- • **Full Raspberry Pi Compatibility:** Supports every 40-pin Raspberry Pi model from 1A+ to 4B and Zero-W — future-proof your projects.
- • **Universal 8-Port RJ45 Interface:** Streamline your GPIO connections with 8 robust RJ45 sockets, perfect for modular prototyping.

## Overview

The RJ45 GPIO Pinout Breakout Board by OONO offers 8 RJ45 8P8C ports that simplify connecting Raspberry Pi GPIO pins and power to peripherals. Compatible with all 40-pin Raspberry Pi models including Zero-W, it features independently selectable 5V/3.3V or external power per port, supporting UART, SPI, and multiple I2C interfaces. The package includes mounting hardware and pin jumpers, making it an essential tool for streamlined prototyping and modular device integration.

## Description

1, 8 port(2x4) RJ45 8P8C sockets, with the module you can easily connect Raspberry Pi GPIOs and Power supply to peripheral devices through the RJ45 connector. The module support all 40pin Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B Zero, Zero-W. 2, Each RJ45 port is connected Power Supply and GND. Each RJ45 can independently choose from the Raspberry Pi 5V / 3.3V, or from blue terminal block, to supply power to external devices. The 4 5 pin of all RJ45 ports are connected to the power supply(VCC, V+), and 7 8 pin connected to GND(0V). 3, RJ45 GPIO connects: 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. 4, 2x20pin expansion pin header, pin height 10mm/0.39" 5, Packing list: 1x RJ45 breakout board, 4x brass standoffs, 8x M2.5x6 screws, 8x pin jumpers. (the item not include Raspberry Pi, RJ45 cable and plug)

Review: Common Interface for devices - Bought this board to make prototyping and developing easier. Liked that sensors could be exchanged easily. Liked that the RJ45 connectors provide a common interface to the sensors.
Review: Great Breakout - I got this thinking I could use each as a terminal server, but can't use it for that (which is a limitation of the Pi, not this product). However, this is a great way to interface other devices off of it, and I haven't had any issues with it. Using RJ45 connectors and solid-core cabling makes break outs pretty easy.

## Features

- 8 port(2x4) RJ45 8P8C sockets, with the module you can easily connect Raspberry Pi GPIOs and Power supply to peripheral devices through the RJ45 connector. The module support all 40pin Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B Zero, Zero-W.
- Each RJ45 port is connected Power Supply and GND. Each RJ45 can independently choose from the Raspberry Pi 5V / 3.3V, or from blue terminal block, to supply power to external devices. The 4 5 pin of all RJ45 ports are connected to the power supply(VCC, V+), and 7 8 pin connected to GND(0V).
- RJ45 GPIO connects: 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.
- 2x20pin expansion pin header, pin height 10mm/0.39"
- Packing list: 1x RJ45 breakout board, 4x brass standoffs, 8x M2.5x6 screws, 8x pin jumpers. (the item not include Raspberry Pi, RJ45 cable and plug)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08PZ5H2BP |
| Best Sellers Rank | #615,579 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,408 in Prototyping Boards & Accessories |
| Brand | OONO |
| CPU Model | ARMv7 |
| Compatible Devices | Raspberry Pi |
| Compatible Processors | Raspberry Pi |
| Customer Reviews | 4.2 out of 5 stars 11 Reviews |
| Graphics Card Interface | Integrated |
| Main Power Connector Type | Micro-USB |
| Manufacturer | CZH-LABS |
| Memory Slots Available | 2 |
| Memory Storage Capacity | 8 GB |
| Model Name | RJ45 GPIO Pinout Breakout Board |
| Model Number | D-1388 |
| Number of Ethernet Ports | 8 |
| Number of Ports | 8 |
| Platform | Not Machine Specific |
| RAM Memory Technology | DDR |
| System Bus Standard Supported | SATA 2 |

## Product Details

- **Brand:** OONO
- **Compatible Devices:** Raspberry Pi
- **RAM Memory Technology:** DDR
- **Compatible Processors:** Raspberry Pi
- **Platform:** Not Machine Specific
- **Model Name:** RJ45 GPIO Pinout Breakout Board
- **CPU Model:** ARMv7
- **Memory Storage Capacity:** 8 GB
- **Main Power Connector Type:** Micro-USB
- **Graphics Card Interface:** Integrated

## Images

![RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W - Image 1](https://m.media-amazon.com/images/I/71+G2LUp2HL.jpg)
![RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W - Image 2](https://m.media-amazon.com/images/I/717YAVIThOL.jpg)
![RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W - Image 3](https://m.media-amazon.com/images/I/71LNwd5BgjL.jpg)
![RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W - Image 4](https://m.media-amazon.com/images/I/71nalpEC7yL.jpg)
![RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B 3B+ 3A+ 4B Zero-W - Image 5](https://m.media-amazon.com/images/I/81FbhPsQosL.jpg)

## Questions & Answers

**Q: What are the speeds of the RJ45 ethernet ports?**
A: The RJ45s are not Ethernet ports.  The pinouts are converted from the Raspberry Pi GPIO to RJ45 format so it can be easily run using RJ45 cables.

**Q: What are this rj45 ports used for?  may i use them to install a firewall and have several wan / lan  ports?**
A: They are not wan or lan ports... they just break out the GPIO pins.

**Q: Can i use thus to power more raspberry pi 4s in a cluster?**
A: Yes you can do it

**Q: Can you select pwr source for some rj45s to blue term and others from 5vdc rpi also other rj45s from 3vdc rpo?**
A: yes, you can select different power source (onboard 3v, onboard 5v, external power) for each RJ45.

## Customer Reviews

### ⭐⭐⭐⭐ Common Interface for devices
*by A***R on March 18, 2021*

Bought this board to make prototyping and developing easier. Liked that sensors could be exchanged easily. Liked that the RJ45 connectors provide a common interface to the sensors.

### ⭐⭐⭐⭐⭐ Great Breakout
*by D***Y on April 17, 2021*

I got this thinking I could use each as a terminal server, but can't use it for that (which is a limitation of the Pi, not this product). However, this is a great way to interface other devices off of it, and I haven't had any issues with it. Using RJ45 connectors and solid-core cabling makes break outs pretty easy.

### ⭐⭐⭐⭐⭐ Great seller, fast shipping, highly recommended!!!
*by T***S on July 20, 2021*

I ordered a breakout board. Shipping was very fast and the product was good quality.

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-16*