# Radxa Zero 3W

> Credit-card sized Rockchip RK3566 SBC with up to 4GB LPDDR4, eMMC, microSD, WiFi 5, Bluetooth 5.0, and USB-C OTG — a compact headless Linux board with no Ethernet port.

## Quick Facts

- **Brand:** Radxa
- **Board Type:** linux-sbc
- **Price:** ~$19.99
- **Product Readiness:** consumer
- **CPU:** Rockchip RK3566
- **CPU Architecture:** ARM Cortex-A55
- **CPU Cores:** 4
- **RAM:** 1GB / 2GB / 4GB LPDDR4
- **Flash:** eMMC (8GB/16GB/32GB)
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Antenna:** Built-in PCB antenna
- **SD Card:** microSD

## Connectivity

- **Wifi:** WiFi 5 (802.11ac)
- **Bluetooth:** BLE 5.0

## Open Source

- **Firmware:** No
- **Schematics:** Yes
- **PCB Layout:** No

## Compatible Firmware

armbian

## Use Cases

- iot
- embedded
- wireless-sensor

## Description

## Overview

The Radxa Zero 3W is an ultra-compact single-board computer built around the Rockchip RK3566 quad-core Cortex-A55 SoC with a Mali-G52 GPU. Roughly the size of a credit card, it targets IoT deployments, embedded Linux projects, and applications where board footprint is a primary constraint. It is available with 1 GB, 2 GB, or 4 GB of LPDDR4 RAM, along with eMMC and a microSD slot for storage.

Wireless connectivity is provided by an onboard WiFi 5 (802.11ac) and Bluetooth 5.0 module. The board intentionally omits a wired Ethernet port, keeping the form factor minimal. USB-C provides both OTG data and 5 V power. The companion model Radxa Zero 3E offers a similar layout with Gigabit Ethernet via the USB-C port instead of WiFi.

Armbian supports both mainline and vendor kernels for the Zero 3W, offering Desktop and minimal/IoT images based on Debian and Ubuntu. The board is a popular choice for wireless sensor nodes, headless media clients, and portable Linux projects that benefit from the small physical footprint.

## Where to Buy

- [Arace Tech](https://openhardware.directory/r?to=https%3A%2F%2Farace.tech%2Fproducts%2Fradxa-zero-3w&ref=openhardware.directory&product=radxa-zero-3&source=md-export) — $19.99

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fradxa.com%2Fproducts%2Fzeros%2Fzero3w&ref=openhardware.directory&product=radxa-zero-3&source=md-export)
- [armbian](https://openhardware.directory/r?to=https%3A%2F%2Fwww.armbian.com%2Fradxa-zero-3%2F&ref=openhardware.directory&product=radxa-zero-3&source=md-export)

## Tags

`radxa`, `zero3w`, `rk3566`, `sbc`, `linux`, `armbian`, `compact`, `wifi`, `no-ethernet`

## Images

![Radxa Zero 3W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/radxa-zero-3/a378f2f54cf0.webp)
![Radxa Zero 3W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/radxa-zero-3/41eaa495fe42.webp)

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