RTL8111H M.2 B+M Key 4-Port RJ45 Gigabit Ethernet Network Card 10/100/1000 Mbps LAN Adapter PCIe Network Interface Board with Auto-Negotiation and IEEE 802.3x Compatible with Windows/Linux

Product Description:

M.2 (B+M Key) to 4-port RJ45 Gigabit Ethernet network card featuring an RTL8111H chip and four independent LAN ports. It adds high-speed Ethernet connectivity to compact systems, gaming PCs, NAS setups, industrial control systems, and servers.

Core Selling Points:

Provides four independent RJ45 Gigabit Ethernet ports with 10/100/1000 Mbps auto-negotiation. Each port supports auto cross-detection, correction, and full-duplex flow control compliant with IEEE 802.3x. RTL8111H controllers support stable, low-latency and energy-efficient operation for continuous network use. The compact PCB design helps save internal space in custom builds and compact systems.

Technical Specifications:

Interface: M.2 (B+M Key). Ethernet ports: 4 RJ45 ports. Network speed: 10/100/1000 Mbps auto-negotiation. Controller: RTL8111H for each LAN port. Flow control: IEEE 802.3x full-duplex. Main board size: 22 x 80 mm / 0.87 x 3.15 in. Sub-board size: 45 x 70 mm / 1.77 x 2.76 in. Operating temperature: 0°C to 70°C / 32°F to 158°F. Storage temperature: -20°C to 85°C / -4°F to 185°F. Power consumption: 7W. Supported operating systems: Windows and Linux.

Package Contents:

Connection cables

Before Purchase:

Confirm that your system has an available M.2 (B+M Key) interface and sufficient internal space for the main board measuring 22 x 80 mm and the sub-board measuring 45 x 70 mm. Verify operating system support for Windows or Linux before purchase. This card is designed for systems requiring four RJ45 Ethernet ports.