PCI-E intel X520 10GbE Dual- SFP+ Server NICs

Transforming the data center through a reliable and unified 10GbE network

  • PO.: ST723
  • P/N.: SE-LGI599A-2FB
  • Bus Type: PCI Express X8
  • Media Port: SFP+ LC connectivity
  • Main Chipset: Intel® 82599

Intel® 82599 10GbE SFP+ Fiber Ethernet Server Adapter

Transforming the data center through a reliable and unified 10GbE network

Two versions are available

        • 82599ES — Dual-port serial 10 GbE backplane interface for blade implementations 

           (includes the 82599EB SKU functionality plus KR and SFI interfaces).

        • 82599EN — Single-port serial 10 GbE SFI interface for blade implementations.

Features & Benefits

        • PCI Express* 2.0, Dual port 10GbE Ethernet controller deliver the performance that demanding applications require.

        • Industry-leading product innovations for I/O virtualization that are ideal for the dynamic data center.

        • Unified networking support simplifies the network infrastructure by allowing LAN, SAN, and IPC traffic to share the same

           data center fabric.

        • Energy-efficient design with integrated SFI/KR PHYs that creates new opportunities for Blades and LAN-on-motherboard 

           (LOM) solutions.

        • High-volume stable architecture with broad operating system support.

        • Advanced features such as Receive Side Coalescing, Intel® Ethernet Flow Director, and support for PCI Express* 2.0 help 

           deliver new levels of 10GbE performance

        • Intel® Virtualization Technology 1 for Connectivity (Intel® VT-c) delivers industry-leading I/O virtualization capabilities 

           that provide flexibility, scalability and mobility

        • Advanced unified networking capabilities, including support for lossless Ethernet, iSCSI acceleration, NAS, and Fibre Channel 

           over Ethernet (FCoE) offloads help consolidate data center networks onto a single Ethernet fabric

Intel X520 10GbE SFP+
General specification
Controller-processorIntel® 82599 Ethernet Controller
Bus typePCI Express 2.0 (5.0 GT/s)
Bus width8-Lane PCI Express
Connectors2 x SFP+ LC Connectivity
Data rateOptical: 1 GbE/10 GbE
Direct Attach: 10 GbE
Network Standards
Physical Layer Interface
10GBASE-SR, 10GBASE-LR , SFP+ Copper Direct Attach physical media.
IEEE 802.3ad, IEEE 802.3x Flow Control - IEEE 802.1q VLAN, IEEE 802.1p, IEEE802.3ae
Tx / Rx IP, TCP, & UDP checksum offloading (IPv4, IPv6) capabilities
Operating SystemWindows Vista / Win 7 / Server2012 / Server2008 / Win 8 / Win 8.1 / Server2016 / Win 10

FreeBSD, Linux , VMWare ESXi

Hardware & environment

LED IndicatorsLink (solid) and ACT IVITY (blinking)
Link speed ( green=10 Gbps; yellow=1 Gbps)
CertificationsFCC, CE, RoHS
Operating temperature0 °C to 55 °C (32 °F to 131 °F)
Storage temperature-40 °C to 70 °C (-40 °F to 158 °F)
Storage humidityMaximum: 90% non-condensing relative humidity at 35 °C

Packing Accessories list

1 x PCIe intel X520 SFP+ Fiber Server NICs
1 x User's Manual
1 x CD Driver
1 x Low profile bracket


Only the above package contents, other products are not included. 

The allowable error of size measurement is +/- 1~3mm, and the weight of the product is subject to the actual product. 

DimensionsL115 x W70mm (measured without PCIe bracket)
Package SizeL190 x W148 x H30mm (Built-in blister)
Product weight 104.7g
Package weight




PO#P/NSpecificationsOrdering Note
ST723SE-LGI599A-2FBPCIe X8 Dual 10GbE SFP+ Fiber Server NICs  
Based on Intel X520 Ethernet Controller


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