The PCIe x4 RTL8125B Quad 2.5G RJ45 network card is a high-density, high-speed Ethernet solution designed for desktops, servers, and embedded systems requiring multiple 2.5 Gigabit connections. Featuring four Realtek RTL8125B controllers, it delivers four independent 2.5GbE ports through a PCIe x4 interface, offering excellent performance for link aggregation, multi-network routing, and bandwidth-heavy applications.