M.2 (B+M Key) to 4-Port RJ45 Gigabit Ethernet Network Card RTL8111H Chip LAN Adapter with 4 RJ45 Ports, High-Speed 10/100/1000 Mbps for Gaming, NAS, Industrial Control & Servers

Quad-Port Gigabit Expansion Expands your system with four independent RJ45 Gigabit Ethernet ports, each supporting 10/100/1000 Mbps auto-negotiation. Ideal for network aggregation, routing, and virtualization setups for gaming PCs, NAS, or industrial servers.; Compact & Compatible Design Uses an M. 2 (B+M Key) interface, compatible with most mini-PCs, routers, and embedded boards. Delivers high-speed PCIe connectivity while saving internal spaceperfect for compact systems and custom builds.; Stable Performance Built with RTL8111H controllers for each LAN port, ensuring low latency, strong compatibility, and energy efficiency.

Each port supports auto cross-detection, correction, and full-duplex flow control (IEEE 802.3 x).; Industrial-Grade Durability Operates reliably from 0°C to 70°C (32°F158°F) and stores safely between -20°C to 85°C (-4°F185°F). Compact PCB design (main board 22×80mm / 0.87 × 3.15 in, sub-board 45×70mm / 1.77 × 2.76 in), perfect for industrial environments.; Broad OS Support Compatible with Windows, Linux, and macOS operating systems. Plug-and-play setup with included connection cables. Power consumption only 7W, ensuring efficiency for continuous 24/7 operation in NAS or network servers.