Dell Broadcom 57142 2x10GBe SFP+ 2x1GBe RJ45 Network Daughter Card

The Dell NWMNX is a network daughter card that mounts directly to compatible Dell server motherboards, giving the system two 10-Gigabit SFP+ links and two 1-Gigabit RJ45 links without consuming a full-height PCIe slot. By placing the card inside the chassis, administrators can keep external slots free for storage or GPU expansion while still adding a mix of high-speed fiber or direct attach copper connections and standard copper Ethernet.

Built around the Broadcom 57142 controller, the card supports essential features such as load balancing and failover. These capabilities let a virtualization host, database server, or clustered application continue moving traffic even if a cable or port goes offline, reducing the risk of downtime during maintenance or unexpected events.

The two SFP+ ports are ready for 10-Gigabit fiber transceivers or passive twinax cables, making them a practical choice for top-of-rack switches in modern data centers. The two RJ45 ports handle everyday 1-Gigabit traffic, ideal for management networks, backup links, or devices that still run on copper infrastructure. This combination lets IT teams separate critical workloads from routine traffic without adding extra cards or switches.

Because the card is a direct-attach daughter board, installation is straightforward. Slide it into the designated internal slot, secure it with the supplied screws, and connect the existing server backplane harness. Firmware and driver support come from Dell and Broadcom, so integration with popular operating systems such as Windows Server, VMware ESXi, and mainstream Linux distributions is smooth.

For administrators building high-density racks, edge environments, or remote sites where space is limited, the Dell NWMNX provides versatile network expansion with minimal cabling and power overhead. Whether you are rolling out new hyperconverged nodes or upgrading legacy servers that need additional bandwidth, this card delivers the ports you need in the footprint you have.

• Two SFP+ ports that operate at 10 Gbps for fiber or direct attach copper connectivity
• Two RJ45 ports that operate at 1 Gbps for standard Ethernet over copper
• Daughter card form factor that installs inside supported Dell servers, leaving PCIe slots free
• Broadcom 57142 network controller with driver support from Dell and Broadcom
• Load balancing and failover features that improve redundancy and uptime