The PCIe x1 RTL8106E Single 100M SFP network card is a compact and energy-efficient Fast Ethernet adapter designed for embedded systems, industrial automation, and legacy fiber networks. Powered by the Realtek RTL8106E controller, it offers one 100Mbps SFP port through a PCIe x1 interface, supporting flexible fiber or copper SFP modules. Ideal for low-bandwidth, long-distance, or EMI-sensitive environments.