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Small rectangular board with two Ethernet ports USB-C power and USB-A sockets dark PCB no case

ARENTI

ARENTI 2 in 1 Accessory RK3399 4GB LPDDR4 Dual Gbps Ethernet

SKU CH-PQHH-3KTFB

Portable OpenWRT router with dual gigabit Ethernet and 4 GB LPDDR4 for IoT or NAS projects

  • Dual gigabit Ethernet ports deliver up to 934 Mbits/second throughput
  • Rockchip RK3399 six-core processor handles edge-computing workloads
  • 4 GB LPDDR4 memory supports multitasking and NAS applications
  • Open-source FriendlyWrt enables custom IoT and smart-home gateways
  • MicroSD slot up to 128 GB plus USB 3.0 ports expand storage and connectivity

Compact dual-port router for IoT and NAS

The NanoPi R4S is a Rockchip RK3399 board with 4GB LPDDR4 and two Gbps Ethernet ports. It runs FriendlyWrt or Ubuntu for IoT gateways, NAS services or secure travel routing. Developers and home-lab builders who need wired throughput and open-source firmware will use it. Buyers who want built-in Wi-Fi or onboard eMMC storage should look elsewhere.

Plug in power and microSD then flash FriendlyWrt

Power arrives through the USB-C connector or pin header at 5V/3A. A microSD card up to 128GB holds the OS; there is no onboard eMMC. The board exposes two USB 3.0 Type-A ports, one USB 2.0 header and a 5V fan header. Common issues: forgetting the microSD card, using an under-powered USB-C supply or missing the fan header for sustained loads.

Check for 5V 3A supply

You need a 5V/3A USB-C power source and a microSD card up to 128GB to boot. Verify that your enclosure can fit the board and provide airflow for the fan header. Confirm your network cabling uses standard Gigabit Ethernet; the second port comes via PCIe. No onboard wireless radio is present, so plan for a USB Wi-Fi adapter if wireless is required.

Highlights

  • Dual gigabit Ethernet ports deliver up to 934 Mbits/second throughput
  • Rockchip RK3399 six-core processor handles edge-computing workloads
  • 4 GB LPDDR4 memory supports multitasking and NAS applications
  • Open-source FriendlyWrt enables custom IoT and smart-home gateways
  • MicroSD slot up to 128 GB plus USB 3.0 ports expand storage and connectivity

Specifications

No published specifications for this item yet.

Questions about this item

How do I verify the router is operating correctly after initial setup?

Connect both Ethernet cables and confirm each port negotiates a 934 Mbits/second link; the FriendlyWrt web interface will then show active WAN and LAN traffic.

What comes in the box and what must I purchase separately?

The unit includes the NanoPi R4S board with dual Gigabit Ethernet, two USB 3.0 Type-A ports, one USB 2.0 header, a 5 V fan connector and a MicroSD slot; you must supply a 5 V / 3 A USB-C power adapter and a MicroSD card up to 128 GB.

Which software image should I choose for a NAS or smart-home gateway?

FriendlyWrt 19.07.4 (64-bit, Linux 5.4.75) is the recommended build for IoT, NAS and smart-home gateway workloads on the RK3399 with 4 GB LPDDR4.

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