540-BBIV: Dell Broadcom 57412/5720 2x10GbE SFP+ + 2x1GbE Network Daughter Card (rNDC)

Also listed as: 0N20KJ, N20KJ, BCM57412-5720-RNDC · made by Broadcom

The Dell 540-BBIV is a Dell Broadcom 57412/5720 2x10GbE SFP+ + 2x1GbE Network Daughter Card (rNDC) delivering 10GbE / 1GbE network connectivity across 2x 10GbE SFP+ and 2x 1GbE RJ45 via Dell Proprietary rNDC Connector. Built with Broadcom controller architecture, the 540-BBIV provides hardware offload acceleration and virtualization support for R740, R740XD, R640 enterprise servers.

Specifications

About the 540-BBIV

The Dell 540-BBIV is a Dell Broadcom 57412/5720 2x10GbE SFP+ + 2x1GbE Network Daughter Card (rNDC) engineered to deliver 10GbE / 1GbE network transmission across 2x 10GbE SFP+ and 2x 1GbE RJ45 over Dell Proprietary rNDC Connector. Powered by Broadcom controller architecture on the 540-BBIV, it executes hardware-level protocol processing, RoCE, and SR-IOV virtualization while maintaining a thermal envelope of approximately 12W. In Dell's networking portfolio, 540-BBIV provides dedicated high-bandwidth fabric connectivity for clustered virtualization, network storage, and enterprise database hosts.

Compatibility

Engineered for Dell PowerEdge servers including R740, R740XD, R640, the 540-BBIV mounts directly into Rack Network Daughter Card (rNDC) locations. The 540-BBIV installs into a standard Dell Proprietary rNDC Connector expansion riser slot with matching bracket profile. Cabling the 540-BBIV requires 10GbE / 1GbE-rated media, including direct attach copper twinaxial assemblies, optical transceivers, or patch leads matched to its physical ports. Supported operating systems on the 540-BBIV include VMware ESXi, Red Hat Enterprise Linux, and Windows Server with native Dell drivers.

How to identify a genuine unit

Authentic Dell 540-BBIV units carry an identification label displaying DP/N 0N20KJ and Broadcom model code BCM57412-5720-RNDC along with Dell regulatory marks. In iDRAC Network Devices inventory, the card registers under part number 540-BBIV with active link state, port MAC addresses, negotiated speed, and certified Dell firmware. Onboard physical indicators on the 540-BBIV provide link status and port activity monitoring.

Buying used

When purchasing a pre-owned 540-BBIV, examine the gold edge connector fingers for scratches, peeling contacts, or missing surface-mount capacitors. Ensure that the 540-BBIV PCIe mounting bracket (low-profile or full-height) is intact and properly aligned for chassis installation. Validate in iDRAC Lifecycle Controller that the 540-BBIV is recognized with certified Dell firmware and passes diagnostics under sustained 10GbE / 1GbE network traffic.

Fits these models

• Dell PowerEdge R740
• Dell PowerEdge R740xd
• Dell PowerEdge R640

Works together

How the Dell 540-BBIV connects to servers, storage and the network: 3 ways, with the hardware on each path.

Plan and size it

• Draw this setup in the topology planner mrplanb.com
• Add up rack power and space rack-density.com
• iSCSI explained mrplanb.com
• Virtualization storage Ledger: scored storage platforms mrplanb.com
• Network monitoring tools compared mrplanb.com
• Dell E-Lab Navigator (Dell interoperability) dell.com

Check compatibility with Dell

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell 540-BBIV.

• Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
• Support Dell Support: drivers, manuals and service tag lookup

Equivalent part numbers

• Broadcom BCM57412/5720 rNDC Broadcom NetXtreme-E SFP+ hybrid rNDC

Sources

• Dell Broadcom 57412/5720 rNDC Specifications, checked 2026-10-27