540-BBUN Dell 10G PCIe 3.0 x8 Ethernet Network Card

Enterprise Dual-Port 10GbE SFP+ PCIe NIC for deterministic uplinks with the 540-BBUN

The 540-BBUN is a Dell EMC full-height add-in networking adapter designed for consistent 10GbE Top-of-Rack connectivity in rack servers and virtualisation hosts. Built on the Broadcom BCM57412 controller, it provides dual-port 10GbE Ethernet via 2 x SFP+ interfaces, enabling clean separation of production and storage networks or active/standby uplinks in a single adapter footprint.

Using a PCIe 3.0 x8 host interface, the 540-BBUN aligns with mainstream server PCIe lane budgets while delivering sufficient bandwidth for consolidated east-west traffic, VM mobility, and iSCSI storage access. Hardware acceleration features such as TCP/IP offload, checksum offload, and LSO reduce per-packet CPU overhead under high connection counts, supporting predictable latency and host efficiency without relying on RDMA. The architecture also supports PXE and iSCSI boot, allowing standardised boot-from-SAN deployments and streamlined bare-metal provisioning across large clusters.

Why Choose the 540-BBUN?

The 540-BBUN provides an enterprise-focused balance of port density and operational simplicity: 2 x 10GbE SFP+ in a full-height PCIe card supports scalable rack designs without consuming additional mezzanine slots. For virtualisation and storage-centric nodes, the 540-BBUN enables repeatable network patterns, resilient uplink design, and stable performance under mixed VM and iSCSI traffic profiles.

Dell engineering emphasises platform compatibility, lifecycle stability, and data centre fit, ensuring the adapter integrates cleanly with validated server configurations, standard cabling practices, and controlled firmware/driver alignment expected in enterprise change management.

Key Applications:

• 10GbE Top-of-Rack uplinks
• Virtualisation host networking
• iSCSI boot and boot-from-SAN environments
• Dual-network segmentation (LAN/SAN)

At Happyware - Server Hardware you benefit from non-binding offers tailored to your rollout plan for the 540-BBUN and extended warranty options up to 6 years to protect long-lived infrastructure deployments.