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Green circuit board with two silver QSFP cages and gold PCIe edge connector

Solarflare Communications, Inc.

Solarflare Communications, Inc. SFN7042Q-PXE 40GbE dual-port network card

SKU CH-3YPA-KHXMW MPN SFN7042Q-PXE

Dual-port 40 GbE server adapter with QSFP+ connectors on a PCIe 3.0 interface

  • Rated speed40GBase-X
  • Interface typePCI-Express
  • Connection types40GBase-X
  • Dual-port 40 GbE throughput for high-density server links
  • PCIe 3.0 x8 interface keeps host CPU utilisation low
  • QSFP+ cages accept direct-attach copper or optical modules
  • Solarflare Flareon firmware offloads TCP/IP processing from the OS

Dual-port 40GbE server adapter

The Solarflare Flareon SFN7042Q installs in a PCI-Express 3.0 slot and presents two QSFP+ ports running at 40GbE. It targets data-centre servers and high-performance clusters that need low-latency 40-gigabit connectivity. Buyers requiring single-port cards or slower Ethernet speeds should choose a different model.

Thermals and power draw

The card is designed for standard server airflow and draws power from the PCIe slot without auxiliary connectors. Acoustic output follows the host chassis fan profile rather than adding its own noise source. Operators needing passively cooled adapters or lower slot power budgets must verify compatibility with their specific platform.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $520.99
Pricier than about 88% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameSolarflare
Performance
Rated speed40GBase-X
Ports & slots
Interface typePCI-Express
Connection types40GBase-X
Size & build
Shipping weight0.23 kg
Package size224 × 163 × 41 mm

Questions about this item

How do I install the SFN7042Q-PXE into a PCIe 3.0 slot?

Align the card with an available PCIe 3.0 slot, press down evenly until the bracket seats, then secure the retention screw.

What maintenance does the dual-port 40GbE adapter need over time?

Periodically inspect the QSFP+ cages for dust, reseat transceivers if link errors appear, and keep server firmware current.

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