Lekuo Dual Port 40GbE QSFP+ PCIe x8 Network Card, Intel XL710-T2 Chipset

Controller

Intel XL710

Transmission rate per port

40Gbps

Ports

2 x QSFP+

Bus Interface

PCIe 3.0 x8 (compatible with x16)

Form Factor

Full-height / Half-height (bracket included)

Network Standard Physical Layer Interfaces

40GBASE-SR4/LR4, 40GbE QSFP+ AOC/DAC

Jumbo Frame Support

Up to 9.5 KB

Operating Temperature

0 °C to 55 °C (32 °F to 131 °F)

Network Virtualization

VXLAN, MACinUDP, NVGRE, IPinGRE

Dimensions

161 × 69 mm

Weight

Net: 113.4g

LED Indicators (OPERATION)

40Gbps: Yellow LINK on; Blue ACT blink

Operating System Support

Windows Server 2016 R2/2016/2012 R2/2012/2008 R2/2008, Windows 7/8/8.1/10, Linux Stable Kernel version 2.4.x / 2.6.x / 3.x / 4.x or later, VMware 6.x

Lekuo PL71F21 – Dual Port 40GbE QSFP+ Network Card

Built on an Intel XL710-T2 compatible controller, this PCIe x8 network adapter delivers enterprise-grade performance for high-demand server, storage, and HPC environments. With two 40Gbps QSFP+ ports, it enables ultra-high-bandwidth, low-latency connectivity ideal for virtualization, IP-SAN, private cloud, and data-intensive workloads.

Key Features:

Dual 40GbE Ports – Full-duplex 40Gbps per port, aggregating up to 80Gbps total throughput
SR-IOV & VMDq – Significantly reduce CPU utilization in multi-VM deployments
Jumbo Frames – Support up to 9.5KB for higher efficiency and reduced packet overhead
Hardware Offload – Accelerates VXLAN, NVGRE, iSCSI, FCoE, and NFS traffic for virtualized networks
DCB/DCB-X & PFC – Enables lossless, predictable network performance for critical applications
Compatibility – Works seamlessly with Windows Server, Linux, VMware ESXi, Proxmox, TrueNAS, and more

Ideal For:

Virtualization hosts (VMware/Proxmox), IP-SAN/NAS storage arrays, private cloud infrastructure, HPC clusters, and enterprise network segmentation.

Related Downloads

Driver Download

1. PL71F21

Download