The Dell 540-BCZY is a 4-port 25GBase-X network adapter delivering 25Gb/s per port (100Gb/s aggregate throughput) over SFP28 connectors. This full-height card installs in PCIe 4.0 x16 slots on compatible Dell PowerEdge servers and workstations, providing enterprise-grade connectivity for high-speed storage networks, data center fabrics, and bandwidth-intensive applications. The adapter supports standard 25Gb Ethernet protocols and is compatible with Dell's server ecosystem including recent generation 14th and 15th generation PowerEdge platforms. Typical use cases include HPC clusters, virtualized environments requiring low-latency interconnect, backup acceleration, and multi-node cluster configurations where per-server throughput exceeds 10Gb capabilities. The SFP28 transceiver design allows flexible cabling options and distance reach depending on module selection (DAC, SR, LR, or ER variants).
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