Detailed Specifications
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
| Specification | Detail |
|---|
| Brand | StarTech.com |
| Part Number | PEX40GQSFDPI |
| Product Type | 40GbE QSFP+ PCIe network card |
| Chipset | Intel XL710-BM2 |
| Host Interface | PCI Express 3.0 x8 |
| Network Ports | 2 × QSFP+ |
| Max Data Rate | 40 Gbps per port |
| Total Throughput | Up to 80 Gbps full duplex |
| Network Standards | IEEE 802.3ba, 802.3ad, 802.1Q |
| Fiber Support | 40GBASE-SR4, 40GBASE-LR4 |
| Features | VLAN, Jumbo Frames (9K), Link Aggregation |
| Form Factor | PCIe add-in card |
| Compatibility | Windows, Linux, Server OS |
| Operating Temp | 0 °C to 57 °C |
| Compliance | CE, RoHS |
