Microconnect MC-JL82576EB interface card/adapter internal RJ-45

The Microconnect MC-JL82576EB is a PCI Express x4 internal network interface card equipped with the Intel-compatible JL82576EB Gigabit Ethernet controller. The card provides dual 1 Gbps RJ45 ports and supports IPv4 and IPv6 protocols, making it suitable for modern wired network environments. It is supplied with both a full-height bracket and a low-profile bracket and has a compact form factor and low weight for easy installation in a variety of systems.

Advantages

The MC-JL82576EB offers reliable Gigabit performance through a proven controller, dual-port connectivity for linking servers or remote workstations, and compatibility with PCIe x4 slots. Support for IPv4 and IPv6 ensures protocol compatibility, and the included low-profile and standard brackets simplify installation in different chassis types.

Suitable for

• Server network uplinks and redundancy
• Connecting remote workstations or file servers over long-distance copper Ethernet
• Upgrading desktop or compact systems with additional Gigabit Ethernet ports
• Virtualized environments that require reliable wired connectivity

Key specifications

• Host interface: PCIe (PCI Express x4)
• Network controller: JL82576EB (Intel-compatible)
• Ports: 2 × RJ45, 1 Gbps each
• Protocols: IPv4, IPv6
• Product colour: Green
• Weight: 0.15 kg
• Packaging dimensions: 174 × 132 × 33 mm

How to use

Power down the computer and open the chassis according to the system manufacturer's instructions. Install the MC-JL82576EB into an available PCIe x4 (or larger) slot and secure the bracket to the case. Attach the appropriate bracket (standard or low-profile) before closing the chassis. Boot the system, install any required drivers provided by the operating system or MicroConnect, and connect network cables to the RJ45 ports. Configure IP settings for IPv4 or IPv6 as needed in the operating system or network management tools.

Recommendations

Use shielded twisted-pair Ethernet cables (Cat5e or higher) for reliable Gigabit links and ensure the system BIOS and operating system are up to date to support PCIe device enumeration. For rack or small-form-factor cases, use the included low-profile bracket if needed. In virtualized or high-traffic environments, verify driver support and offload feature settings for optimal performance.