# NanoPi R2S

> Budget dual-GbE router board with RK3328 quad-core Cortex-A53 at 1.3GHz, 1GB DDR4, native + USB 3.0 Gigabit Ethernet, and USB-C power — the most affordable open-source OpenWrt router platform at just $27.

## Quick Facts

- **Brand:** FriendlyElec
- **Board Type:** sbc
- **Price:** ~$27
- **Product Readiness:** consumer
- **CPU:** ARM Cortex-A53 4x1.3GHz, RK3328
- **CPU Architecture:** ARM Cortex-A53
- **CPU Cores:** 4
- **RAM:** 1GB DDR4
- **Flash:** none (microSD boot)
- **USB:** USB 2.0 Type-A,USB-C (power)
- **Power:** 5V/2A via USB-C
- **Operating Voltage:** 3.3V
- **Operating Temp:** 0°C to 80°C
- **Dimensions:** 55.6 × 52mm
- **Weight:** 20g
- **Antenna:** No
- **SD Card:** microSD (up to 128GB)

## Connectivity

- **Ethernet:** 2x Gigabit

## Open Source

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

## Compatible Firmware

arduino

## Use Cases

- iot-gateway
- wired-networking
- iot

## Components

- **RK3328** (mcu): Rockchip RK3328 quad-core Cortex-A53 at 1.3GHz with Mali-450 GPU and USB 3.0 for second Ethernet. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fopensource.rock-chips.com%2Fimages%2Fd%2Fd7%2FRockchip_RK3328_Datasheet_V1.2-20170321.pdf&ref=openhardware.directory&product=nanopi-r2s&source=md-export)

## Protocols

- **UART**: notes: Debug UART 3-pin header

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO1 | Debug TX | UART | digital-output |
| GPIO2 | Debug RX | UART | digital-input |

## Description

## Overview

The NanoPi R2S is the quintessential budget open-source router. Powered by the Rockchip RK3328 quad-core Cortex-A53 at 1.3GHz with 1GB DDR4, it provides dual Gigabit Ethernet (one native, one via USB 3.0) in a tiny 55.6×52mm package — all for just $27.

Despite its small size and low price, the R2S handles typical home router duties with ease: NAT routing, VPN, firewall, ad blocking (Pi-hole/AdGuard), DNS, and DHCP. Running FriendlyWrt (OpenWrt), it supports hundreds of packages for network monitoring, traffic shaping, and IoT gateway functions.

With USB 2.0, microSD boot, and a metal case option, the R2S has become one of the most popular DIY router platforms worldwide. Its low power consumption (5V/2A) makes it suitable for always-on deployment as a network appliance.

## Where to Buy

- [FriendlyElec](https://openhardware.directory/r?to=https%3A%2F%2Fwww.friendlyelec.com%2Findex.php%3Froute%3Dproduct%2Fproduct%26product_id%3D282&ref=openhardware.directory&product=nanopi-r2s&source=md-export) — $27.00
- [Amazon US](https://openhardware.directory/r?to=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB0B6SDMS2W&ref=openhardware.directory&product=nanopi-r2s&source=md-export) — $35.00

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.friendlyelec.com%2Findex.php%3Froute%3Dproduct%2Fproduct%26product_id%3D282&ref=openhardware.directory&product=nanopi-r2s&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.friendlyelec.com%2Fwiki%2Findex.php%2FNanoPi_R2S&ref=openhardware.directory&product=nanopi-r2s&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Ffriendlyarm%2Fsd-fuse_rk3328&ref=openhardware.directory&product=nanopi-r2s&source=md-export)

## Tags

`friendlyelec`, `nanopi`, `rk3328`, `router`, `openwrt`, `budget`, `dual-gbe`

## Images

![NanoPi R2S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/nanopi-r2s/3f53a4ba95a0.jpg)

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