NanoPi R4S as Soft Router

NanoPi R4S  as Soft Router by Flashing OpenWRT. It comes with two reall Gigabit Ethernet ports: one as WAN; another as LAN. also with ultra small size: 72x72x29mm (including case), bigger than NanoPi R2S: 61x60x26mm (including case). 

Highlight comparing with NanoPi R2S:

  • CPU: RK3399, more powerful
  • Two real Gigabit network port
  • 4GB LPDDR4 optional
  • USB-C Power supply


SoCRockchip RK3399
CPU:big.LITTLE,Dual-Core Cortex-A72(up to 2.0GHz) + Quad-Core Cortex-A53(up to 1.5GHz)
GPU:Mali-T864 GPU,supports OpenGL ES1.1/2.0/3.0/3.1, OpenCL, DX11, and AFBC
VPU4K VP9 and 4K 10bits H265/H264 60fps decoding, Dual VOP, etc
Storage:no Onboard eMMC
Network:one Native Gigabit Ethernet, and one PCIe Gigabit Ethernet
PMU Power Management:RK808-D PMIC, cooperated with independent DC/DC, enabling DVFS, software power-down, RTC wake-up, system sleep mode
USB Host:two USB 3.0 Type-A ports
Debug Serial Port/UART0:one Debug UART, 3 Pin 2.54mm header, 3V level, 1500000bps
microSD Slot:1
GPIO:2×5-pin header: SPI x 1, I2C x 1
4-pin header: USB 2.0
LED:1 x power LED and 3 x GPIO Controlled LED (SYS, LAN, WAN)
PCB Dimension:8 Layer, 66 mm x 66 mm
Power:DC 5V/3A, via USB-C connector or Pin header
Working temperature:-20℃ to 70℃
OS SupportFriendlyCore 20.04 (64-bit) (Linux-4.19.111 + U-boot-2017.09)
FriendlyWrt 19.07.5 (64-bit) (Linux-5.10 + U-boot-2017.09)

OpenWRT image for NanoPi R4S

The official image of OpenWRT  has not been released by the manufacturer.


Peformance of NanoPi R4S 




  • Bigger than NanoPi R2S
  • More expensive than NanoPi RS2
  • USB-C power adapter more expensive
  • Openwrt is not  supported officially yet.



Overall , Naopi R4S is mch powerful as soft router.  Its performance exceeds some low-end x86 CPU, but do believe the multi-task ability still weaker than x86 software.  4G RAM seems little waste to be a soft router, but potential to do more things in future. 

Current price: US Dollar

  • 1GB with metal case: $67
  • 4GB with metal case: $78

Hence,  it’s good device as soft router, much powerful, but not cost value one.