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Raxmolo -RV2 RISC-V Open Source Gateway Board — main product image
Raxmolo -RV2 RISC-V Open Source Gateway Board
Raxmolo -RV2 RISC-V Open Source Gateway Board
Raxmolo -RV2 RISC-V Open Source Gateway Board
Raxmolo -RV2 RISC-V Open Source Gateway Board
Raxmolo -RV2 RISC-V Open Source Gateway Board
Raxmolo

Raxmolo -RV2 RISC-V Open Source Gateway Board

A four-core RISC-V gateway board pairing a 2.5G WAN port with five Gigabit LAN ports and a dedicated network accelerator

$63.80*
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*Price sourced from Amazon.com. Last updated:Jul 31, 2026.Price and availability are subject to change.

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Overview

The Raxmolo -RV2 stakes out a specific niche: a RISC-V open source gateway built for enterprise and industrial control duty rather than desktop experimentation. At its heart sits the Siflower SF21H8898, an industrial-grade SoC that integrates four 64-bit RISC-V cores with a purpose-built network processing accelerator. That NPU is the headline. It handles L2/L3 forwarding in hardware, supports IPv4/IPv6 dual stack, and is rated for 20Gbps switching capacity with full byte wire-speed forwarding — the kind of data-plane muscle that separates a serious gateway from a repurposed hobby board. Buyers weighing this against other single-board computers should note it targets routing and packet processing first, general computing second.

Construction reflects that intent. Networking spans a single 2.5G WAN port and five Gigabit LAN ports, backed by 512MB of DDR3 memory. Storage is deliberately layered: 128MB of SPI NAND and 16MB of SPI NOR flash, with the NOR helping ensure the onboard system stays intact. An M.2 2242/2230 slot accepts NVMe SSDs over a PCIe gen 2 x1 link, and MINI PCIE plus USB 2.0 round out the expansion. The SF21H8898's flexible interface set — QSGMII, SGMII/HSGMII and RGMII on the network side, plus SPI, UART and PWM — signals a board meant to be integrated into custom hardware. Add IEEE 1588 synchronization support, and the -RV2 reads as a foundation for developers building tailored gateway, firewall, or industrial networking solutions on open RISC-V silicon.

Key Features

IEEE 1588 functionality is supported synchronization. It supports external DDR3/DDR3L/DDR4 SDRAM and NAND/NOR SPI The high-speed interface is USB2.0, PCIE2.0, and the low-speed interface is SPI, UART, , PWM, etc. It can be used as enterprise gateway and industrial control gateway. Siflower SF21H8898 chip diagram. Siflower SF21H8898 chip typical application scenarios. Siflower SF21H8898 4 core RISC-V processor

for -RV2 open source gateway is a device based on Siflower SF21H8898 SoC, 1 x 2.5G WAN network interface, 5 Gigabit LAN network interface, onboard 512MB DDR3 memory, 128 MiB NAND, 16 MiB NOR, M.2 interface, MINI PCIE and USB 2.0 interface, etc. for -RV2 open source gateway is a collaboration between Silicon and for open source community (for )

SF2H8898 chip Brief. SF21H8898 is a high performance industrial-grade SOC gateway chip developed by Siflower Communications. It adopts advanced TSMC 12nm FFC process and integrates four cores inside 64-bit RSIC-V processor and dedicated network processing accelerator (NPU) (supports L2/L3 hardware processing, IPv4/IPv6 dual stack, 20Gbps switching capacity, full byte wire-speed forwarding), network-side support for QSGMII, SGMII/HSGMII and RGMII interfaces.

With Siflower NPU, enterprise-class gateway level data forwarding processing capability can be achieved. 512MB DDR3 RAM. 1 x 2.5GbE network and 5 x giga port. 128 MB SPI NAND and 16 MB SPI NOR flash that the onboard system is indestructible, M.2 2242/2230 interface support NVMe SSD (PCIe gen 2 x1)

Specifications

Brand
Raxmolo
Model
-RV2 Open Source Gateway
SoC
Siflower SF21H8898
Processor
4-core 64-bit RISC-V
Process Node
TSMC 12nm FFC
Network Accelerator
Dedicated NPU, 20Gbps switching capacity
Memory
512MB DDR3
Flash Storage
128MB SPI NAND and 16MB SPI NOR
WAN
1 x 2.5GbE
LAN
5 x Gigabit Ethernet
M.2 Slot
2242/2230, NVMe SSD via PCIe gen 2 x1
Other Interfaces
MINI PCIE, USB 2.0, SPI, UART, PWM
Time Sync
IEEE 1588

Frequently Asked Questions

It uses the Siflower SF21H8898 SoC, which integrates a four-core 64-bit RISC-V processor built on TSMC's 12nm FFC process, plus a dedicated network processing accelerator.
It offers one 2.5G WAN interface and five Gigabit LAN ports, giving it substantially more wired networking capacity than a typical single-board computer.
Yes. An M.2 2242/2230 slot supports NVMe SSDs over a PCIe gen 2 x1 link, in addition to the onboard 128MB SPI NAND and 16MB SPI NOR flash.
The board ships with 512MB of onboard DDR3 memory, which suits gateway and routing workloads but is modest for memory-heavy or many-service deployments.
The NPU handles enterprise-class data forwarding in hardware, supporting L2/L3 processing, IPv4/IPv6 dual stack, and a rated 20Gbps switching capacity with wire-speed forwarding.
It targets developers and integrators building enterprise or industrial control gateways on RISC-V, rather than users seeking a plug-and-play consumer networking device.

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