The NanoPi R4S is a high-performance soft router featuring two Gigabit Ethernet ports and two USB 3.0 host interfaces powered by a Rockchip RK3399 CPU . It supports OpenWRT and other Linux distributions, allowing flexible configuration for networking and peripheral devices. The USB 3.0 ports can provide both data and power to connected modules, but high-power devices may require a USB-C power supply of at least 2A to ensure stable operation .
An optical module typically consists of a Transmitter Optical Sub-Assembly (TOSA) and a Receiver Optical Sub-Assembly (ROSA). The TOSA converts electrical signals into optical signals using a laser diode or LED, while the ROSA converts incoming optical signals back into electrical signals . Modules include a PCBA, housing, and optical/electrical interfaces, which may be SFP, SFP+, or USB-based depending on the design .
To connect an optical module to the R4S, determine whether the module uses USB or Ethernet. For USB modules, connect directly to a USB 3.0 port with sufficient power. For fiber-based Ethernet modules, use a media converter or SFP adapter connected to the R4S Ethernet port. Ensure driver support, power requirements, and data rate compatibility for reliable operation. This setup allows the R4S to leverage optical communication for high-speed or long-distance networking applications.
Learn about the different types of optical link modules, their functions, packaging, and key technical concepts like 400G, PAM4, and
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1 Introduction2 Hardware Spec3 Diagram, Layout and Dimension4 Get Started5 Work with Friendlywrt6 Work with Friendlycore7 Work with Debian11 Desktop9 Buildroot Linux10 How to Compile The NanoPi R4S(as "R4S") is an open source platform with dual-Gbps Ethernet ports designed and developed by FriendlyElec for IoT applications.The NanoPi R4S uses the RK3399 SoC. It has two Gbps Ethernet ports and 1G/4G DDR4 RAM. FriendlyElec ported an OpenWrt system for it. It works with Docker CE. It is a good platform for developing Io...See more on wiki iendlyelec TI
View the TI Optical module block diagram, product recommendations, reference designs and start designing.
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Due to the shortage of the chip that has a unique built-in MAC address, we no longer list the R4S board with a unique MAC address
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