StarTech PEX40GQSFDPI Dual Port 40GbE QSFP Network Card

StarTech PEX40GQSFDPI Dual Port 40GbE QSFP Network Card

overview

The StarTech PEX40GQSFDPI is a high-throughput PCIe network interface card designed to deliver dual-port 40 Gigabit Ethernet (40GbE) connectivity using QSFP+ fiber interfaces. It is built on the Intel XL710 chipset, enabling converged networking features and reliable performance for data-intensive environments.

This NIC is deployed in data centers, virtualization clusters, high-performance storage networks, and database servers, where bandwidth aggregation and low-latency communication are critical. With two QSFP+ ports, it supports redundancy, link aggregation, and failover to maintain uptime in mission-critical systems.

It supports 40GBASE-SR4 and LR4 fiber standards, allowing use with both multimode and single-mode fiber via interchangeable QSFP+ transceivers. The PCIe 3.0 interface ensures sufficient bandwidth for high-speed workloads.

Do NOT use this NIC in environments requiring copper Ethernet (RJ45), low-cost edge deployments, or systems without QSFP+ infrastructure. It is optimized for core network and high-bandwidth aggregation layers, not standard enterprise access layers.

key features

• dual QSFP+ ports for 40GbE fiber connectivity
• Intel XL710 chipset for converged networking features
• supports SR4 and LR4 fiber via pluggable transceivers
• PCIe 3.0 x8 interface for high throughput workloads
• redundancy and link aggregation for zero-downtime

specifications