Lenovo 7ZT7A00505 ThinkSystem Broadcom NX-C 25GbE 1-Port SFP28 PCIe Ethernet Adapter
Overview
The 7ZT7A00505 is a single-port 25GbE PCIe network adapter built on the Broadcom NX-C controller, designed to add high-throughput SFP28 Ethernet connectivity to Lenovo ThinkSystem servers. The SFP28 interface supports 25 Gigabit Ethernet — delivering roughly 2.5x the bandwidth of a 10GbE port over the same cabling infrastructure — making it a practical upgrade path for server network adapters in data center and high-density storage environments where 10GbE has become a bottleneck. With a PCIe host interface, it slots into standard PCIe expansion slots without requiring an external power supply or dedicated management plane.
Compatibility
This adapter is part of the Lenovo ThinkSystem component ecosystem and is designed for installation in ThinkSystem rack and tower servers that expose a compatible PCIe slot. Verify slot generation and mechanical form factor (half-height vs. full-height) against your specific ThinkSystem server's option compatibility matrix before ordering — Lenovo's ServerProven list is the authoritative source for confirmed platform support. The SFP28 port accepts standard SFP28 DAC cables, active optical cables, or SFP28 transceivers for structured fiber runs; confirm your top-of-rack switch supports matching SFP28 ports or use a breakout cable to a 100GbE QSFP28 uplink. Country of origin is Mexico.
Installation Notes
Install requires powering down the host server and seating the card in an available PCIe slot — confirm slot availability and riser compatibility in your chassis before procurement. Driver support depends on the host OS and ThinkSystem server generation; consult Lenovo's support matrix for validated firmware and driver versions. No external power connector is required; the card draws power from the PCIe slot directly.
