Intel® Ethernet Server Adapter X520-DA1 for Open Compute Project
Compare Intel® Products
500 Series Network Adapters (up to 10GbE)
Products formerly Niantic
SFP+ Direct Attached Twin Axial Cabling up to 10m
Intel® 82599 10 Gigabit Ethernet Controller
Supported Operating Systems
Data Rate Per Port
Intel® Virtualization Technology for Connectivity (VT-c)
Speed & Slot Width
5.0 GT/s, x8 Lane
System Interface Type
PCIe v2.0 (5.0 GT/s)
Ordering and Compliance
Drivers and Software
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Latest Drivers & Software
Intel® Ethernet Adapter Complete Driver Pack
This download installs version 26.4 of the Intel® Ethernet Adapter Complete Driver Pack for supported OS versions.View download options.
Intel® Ethernet Product Software Release Notes
Provides Intel® Ethernet Product Software Release Notes. (26.4)View download options.
Intel® Network Adapter Driver for Windows Server 2012*
This download record installs version 26.4 of the Intel® Network Adapters driver for Windows Server 2012*.View download options.
Intel® Network Adapter Driver for Windows 8.1*
Installs Intel® Network Adapter drivers release 26.4for Windows 8.1*.View download options.
Intel® Network Adapter Driver for Windows Server 2019*
This download record installs version 26.4 of the Intel® Network Adapter using Windows Server 2019*.View download options.
Intel® Ethernet Connections Boot Utility, Preboot Images, and EFI Drivers
This download version 26.4 installs UEFI drivers, Intel® Boot Agent, and Intel® iSCSI Remote Boot images to program the PCI option ROM flash image and update flash configuration options.View download options.
Administrative Tools for Intel® Network Adapters
This download record installs version 26.4 of the administrative tools for Intel® Network Adapters.View download options.
Intel® Network Adapter Driver for Windows Server 2016*
This download record installs version 26.4 of the Intel® Network Adapter using Windows Server 2016*.View download options.
Adapter User Guide for Intel® Ethernet Adapters
This download contains the 26.4 version of the Intel® Ethernet Adapter User Guide.View download options.
Intel® Network Adapter Driver for Windows Server 2012 R2*
This download installs version 26.4 of the Intel® Network Adapters for Windows Server 2012 R2*.View download options.
Intel® Network Adapter Virtual Function Driver for Intel® 10 Gigabit Ethernet Network Connections
Provides the ixgbevf driver version 4.12.4 for Intel® 10 Gigabit Ethernet Network Connection virtual function devices.View download options.
Intel® Network Adapter Driver for PCIe* Intel® 10 Gigabit Ethernet Network Connections under Linux*
Includes Linux*-based drivers version 5.12.5 for Intel® 10 Gigabit Ethernet Network Connections with PCI Express*.View download options.
Intel® Network Adapter Driver for Windows Server 2008 R2* - Final Release
This download record installs version 25.0 of the Intel® Network Adapter driver for Windows Server 2008 R2*. - Final ReleaseView download options.
The date the product was first introduced.
Flexible Port Partitioning
Flexible Port Partitioning (FPP) technology utilizes industry standard PCI SIG SR-IOV to efficiently divide your physical Ethernet device into multiple virtual devices, providing Quality of Service by ensuring each process is assigned to a Virtual Function and is provided a fair share of the bandwidth.
Virtual Machine Device Queues (VMDq)
Virtual Machine Device Queues (VMDq) is a technology designed to offload some of the switching done in the VMM (Virtual Machine Monitor) to networking hardware specifically designed for this function. VMDq drastically reduces overhead associated with I/O switching in the VMM which greatly improves throughput and overall system performance
PCI-SIG* SR-IOV Capable
Single-Root I/O Virtualization (SR-IOV) involves natively (directly) sharing a single I/O resource between multiple virtual machines. SR-IOV provides a mechanism by which a Single Root Function (for example a single Ethernet Port) can appear to be multiple separate physical devices.
iWARP delivers converged, low-latency fabric services to data centers through Remote Direct Memory Access (RDMA) over Ethernet. The key iWARP components that deliver low-latency are Kernel Bypass, Direct Data Placement, and Transport Acceleration.
Intel® Ethernet Power Management
Intel® Ethernet Power Management Technology provides solutions to common power management approaches by reducing idle power, reducing capacity and power as a function of demand, operating at maximum energy efficiency whenever possible, and enabling functionality only when needed.
Intel® Data Direct I/O Technology
Intel® Data Direct I/O Technology is a platform technology that improves I/O data processing efficiency for data delivery and data consumption from I/O devices. With Intel DDIO, Intel® Server Adapters and controllers talk directly to the processor cache without a detour via system memory, reducing latency, increasing system I/O bandwidth, and reducing power consumption.
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Refer to Datasheet for formal definitions of product properties and features.
‡ This feature may not be available on all computing systems. Please check with the system vendor to determine if your system delivers this feature, or reference the system specifications (motherboard, processor, chipset, power supply, HDD, graphics controller, memory, BIOS, drivers, virtual machine monitor-VMM, platform software, and/or operating system) for feature compatibility. Functionality, performance, and other benefits of this feature may vary depending on system configuration.
“Announced” SKUs are not yet available. Please refer to the Launch Date for market availability.