Cavium - Semiconductor Solutions and Server Innovation

FastLinQ® Converged Network Adapters (CNAs)

FastLinQ® Converged Network Adapters (CNAs) support simultaneous LAN and SAN traffic with powerful hardware offloads that improve system performance.

FastLinQ® 41000 Series CNA

The Cavium™ FastLinQ® 41000 Series Converged Network Adapters are Cavium's next-generation 10G/25G/40G/50GbE Adapter family, which provide exceptional value in delivering industry-leading features and performance to enable the most efficient and agile software-defined data centers (SDDNs). Designed for the most demanding server and network virtualized environments, the 41000 Series Adapters enable Universal RDMA (RoCE and iWARP) as well as NPAR, VXLAN/NVGRE/GENEVE and SR-IOV to boost server CPU efficiency and maximize application performance. This 41000 CNA series also offers concurrent iSCSI and FCoE stateless offload protocols.


The Cavium™ FastLinQ® 41000 Series Converged Network Adapter family includes 25GbE and 10GbE adapters with SFP/SFP28 optical or direct attach copper (DAC) and 10GBASE-T RJ45 connections that support LAN TCP/IP) traffic at full line-rate speeds and key features for enterprise-class data centers and private/public cloud deployments:

  • Scalable networks with 2.5X bandwidth for 25GbE when compared to 10GbE and more than 2X port density when compared to 40GbE
  • Optimum server performance with PCI Express® (PCIe®) Gen3 x8 (10GbE/25GbE)
  • Low latency and high throughput using Universal RDMA with support for RDMA over Converged Ethernet (RoCE), RoCE v2 and Internet wide area RDMA protocol (iWARP), Concurrent iSCSI and FCoE stateless offload protocols
  • Adaptive link controls for seamless zero-touch interoperability with industry-wide 10/25/100GbE switches and cables using FastLinQ SmartAN™ technology
  • Enhanced CPU efficiency for network tunneling with stateless offloads for VXLAN, NVGRE, GRE, and GENEVE
  • Advanced server virtualization features such as NPAR and SR-IOV
  • High-performance network storage with iSCSI extensions for RDMA (iSER), Non-Volatile Memory Express over Fabric (NVMe-oF), Network File System over RDMA (NFSoRDMA), Server Message Block over RDMA (SMB Direct), Storage Spaces Direct (S2D), Linux Lustre, and VMware para-virtualized RDMA (pvRDMA)
  • Simplified deployment, troubleshooting, and lifecycle management using the QConvergeConsole® (QCC) GUI, QCC PowerKit, Cavium's QLogic® Control Suite (QCC) CLI, QCC vCenter GUI/ESX CLI Plug-ins, and OpenStack integration
  • Enhanced management interface with Management Component Transport Protocol (MCTP) over PCIe support
  • Network boot support for PreBoot Execution Environment (PXE) 2.0, iSCSI remote boot, and UEFI boot

Product Information

(Refer to Product Brief for Pack out details)

Part Number Bus Ports Speed Connection Type
QL41162HLRJ PCIe Gen3x8 2 10Gbps 10GBASE-T (RJ45 Copper)
QL41262HLCU PCIe Gen3x8 2 10Gb/25Gb SFP+: DAC, SR Optics
Product Literature
FastLinQ QL41000 Series

8th-generation 25G/10GE Ethernet Controllers

FastLinQ QL41162HLRJ

2x10G RJ45 PCIe Converged Network Adapters

FastLinQ QL41262HLCU

2x25G SFP Converged Network Adapter

Accelerate Live Migration with iWarp using Cavium FastLinQ 25GbE

Cavium FastLinQ 25GbE adapters with Universal RDMA accelerates Live Migration in Microsoft® Windows 2016 by up to 58% while reducing CPU utilization by up to 75%.

Establishing Adaptive Links with SmartAN Technology

SmartAN technology simplifies establishing a link to a switch, streamlines deployment and management, and delivers increased interoperability.

Investment Protection with High-Performance 10GBASE-T from Cavium

Cavium FastLinQ adapters with 10GBASE-T connections provide investment protection to easily transition from 1GbE to 10GbE performance while reducing cost instead of migrating to the higher priced SFP+ optical connectivity.

iWARP RDMA Here and Now

Cavium, Chelsio, and Intel collaborated to present the benefits of iWARP with RDMA.

NVMe over Universal RDMA Fabrics

NVMe-oF delivers the ultimate in choice and flexibility by enabling concurrent support for RoCE and iWARP universal RDMA, along with acceleration of workloads without burdening server CPU with FastLinQ NVMe-Direct technology.

iSER RDMA Accelerates Storage

Accelerate iSCSI storage with universal Remote Direct Memory Access (RDMA).

NVMe Direct

Next-generation offload technology enables high-performance iSCSI-based external NVMe flash storage.

Network Function Virtualization Using Data Plane Developer's Kit

Enabling 25GbE to 100GbE virtual network functions with FastLinQ Intelligent Ethernet Adapters.


Accelerate network performance and lower costs for enterprise data center and cloud environments.

Visualize I/O Connectivity for VMware® vSphere®

Cavium QConvergeConsole Plug-in for VMware vCenter simplifies and accelerates deployment and management.

Unified Adapter Management Across the Data Center

Cavium QConvergeConsole simplifies and accelerates deployment and management in Windows and Linux.

Cavium FastLinQ 41000/45000 Series Interoperability Matrix

This document identifies the supported standards and lists the cables, modules, and switches tested for interoperability with Cavium adapters.

25GbE: The Future of Ethernet

Ixia and Cavium validate end-to-end interoperability of 25 Gigabit Ethernet.

Accelerating Network Virtualization Overlays with Intelligent Ethernet Adapters

ESG Lab tested the performance benefits of offloading tunneling for network virtualization overlays for 10GbE and 25GbE.

Arista - 25G Ethernet: A New Standard for Network Connectivity

This paper explains why and shows how changes in demand, technology, and network economics are working together to alter the networking landscape and how Arista and Cavium are working together, spearheading the effort to bring solutions to the market.

The Linley Group - Universal RDMA: A Unique Approach for Heterogeneous Data-Center Acceleration

Cavium’s FastLinQ stands out by handling both RoCE and iWARP, which are alternative protocols for RDMA over Ethernet.

Media and Analyst Coverage

Read the latest news about Cavium and our products.

Universal RDMA

Learn How Universal RDMA can accelerate your data center with the ultimate flexibility.

FastLinQ 41000

Introducing the capabilities and features of the FastLinQ 10/25GbE 41000 Series.

Cavium QConvergeConsole

Simplified Management for Fibre Channel, Intelligent Ethernet, and Converged Network Adapters.

Cavium Overview of 2550100

Presentation describes the fast and smart technology behind the 25/50/100GbE adapters.

FastLinQ Converged Network Adapter Models – QL41000 Family


Bus Ports Connection Speed











Product Family

25GbE Technology

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Universal RDMA

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