NanoPi R4S
Popular RK3399 dual-GbE router board with 2x Cortex-A72 + 4x Cortex-A53, 4GB LPDDR4, dual Gigabit Ethernet, 2x USB 3.0, metal case option, and OpenWrt/FriendlyWrt support — the go-to affordable open-source router platform.
$55.00
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Specifications
Components
Rockchip RK3399 with 2x Cortex-A72 at 2.0GHz + 4x Cortex-A53 at 1.5GHz, Mali-T864 GPU, 4K video.
Bus Interfaces
GPIO Map
Overview
The NanoPi R4S is one of the most popular open-source router boards, built around the proven Rockchip RK3399 with dual Cortex-A72 cores at 2.0GHz and quad Cortex-A53 cores at 1.5GHz. With 4GB LPDDR4 RAM and dual Gigabit Ethernet ports (one native, one PCIe), it delivers excellent routing and firewall throughput.
Two USB 3.0 Type-A ports enable NAS functionality with external drives, while the compact 66×66mm form factor with optional metal case makes it deployable anywhere. A 10-pin GPIO header provides I2C and SPI for sensor expansion.
Running FriendlyWrt (OpenWrt) out of the box, it's widely used as a home router, VPN gateway, Pi-hole ad blocker, and network monitoring appliance. The large community and extensive OpenWrt package ecosystem make it one of the most versatile network appliance platforms available at its price point.
Use Cases
3IoT Gateway
Acting as a local IoT gateway that aggregates data from sensors, runs MQTT broker, Node-RED, or Home Assistant, and bridges to the cloud.
Wired Networking
Build reliable wired Ethernet-connected IoT nodes or edge computing devices.
IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Resources
Where to Buy
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