FebSmart

PCIE x8 Interface to 2X 10GbE SFP+ Optical Port Network Adapter for Desktop PC, Intel 82599ES 2X 10Gb/s Ethernet Controller, 10GbE PCIE NIC Card for Gaming, 10Gb/s SFP+ PCIE LAN Adapter (X520-DA2)

Name: PCIE x8 Interface to 2X 10GbE SFP+ Optical Port Network Adapter for Desktop PC, Intel 82599ES 2X 10Gb/s Ethernet Controller, 10GbE PCIE NIC Card for
Brand: FebSmart
SKU: B0D9NRJTD4
Price: 55.99 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-07-22

$55.99

Buy on Amazon — $55.99 Compare to similar networking

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

Bottom line: The PCIE x8 Interface to 2X 10GbE SFP+ Optical Port Network Adapter for Desktop PC, Intel 82599ES 2X 10Gb/s Ethernet Controller, 10GbE PCIE NIC Card for Gaming, 10Gb/s SFP+ PCIE LAN Adapter (X520-DA2) is a niche pick — read recent reviews before buying in the networking category, priced around $55.99. Read recent reviews carefully before committing.

SpecPicks Verdict

SpecPicks classifies PCIE x8 Interface to 2X 10GbE SFP+ Optical Port Network Adapter for… as a niche pick — read recent reviews before buying in the networking category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. FebSmart's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for networking of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Backed by FebSmart's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

1. FebSmart X520-DA2 is a PCIE 2.0 x8 interface to 2x 10GbE SFP+ optical port network adapter. It is powered by the Intel 82599ES 2x 10Gb/s Ethernet controller, delivers stable 10Gb/s LAN and SAN connectivity for Windows desktops, Windows servers, NAS, Linux PCs, and Data centers, making it ideal for virtualization and storage-intensive environments.
2.Major Chipset: Intel 82599ES 2x 10Gb/s Ethernet Controller; Network Interface: 10GbE SFP+ Port; Media Type: 10GbE SFP+ Transceivers, DAC and AOC Cables; Network Speed: 10GbE & 1GbE; Network Protocol: LAN & SAN; Host Interface: PCIE 2.0 x8 Interface, 40Gbps Total Bandwidth; Optical Transceiver Speed: 10GbE; DAC and AOC Speed: 10GbE.
3. Support IEEE 802.3ae 10GbE and IEEE 802.1z 1GbE; Support IEEE 1588; Support Intel Data Direct I/O Technology; Support Intelligent Offloads; Support Storage Over Ethernet; Support Intel Virtualization Technology for Connectivity include VMDq & SR-IOV; Support On-chip QoS and Traffic Management and Flexible Port Partitioning (FPP); Support Fiber Channel over Ethernet (FCoE); Support Pre-boot Execution Environment (PXE).
4. Comply with Open Fabrics Enterprise Distribution (OFED) and Open Fabrics Windows Distribution (WinOF-2). X520 DA2 must be used with 10GbE SFP+ transceivers paired with LC fiber cables or directly with 10GbE SFP+ AOC and DAC cables. Compliant with PCIE 2.0 standards, delivering 5 GT/s per lane. PCIE x8 interface provides 40 Gbps of bandwidth, enabling full-duplex 10Gb/s Ethernet connections for both transmit and receive paths.
5. Need to Install driver on Windows 11, 10, 8.x, 7 32/64bit, Driver Free on Windows Server 2012, 2012R2, 2016, 2019, 2022. Linux need to install IXGBE driver. Support RHEL 9.3-9.4, 8.9-8.10, 9.0 - 9.2, 8.0 - 8.8. SLES 12 SP5, SLES 12 SP4, SLES 15 SP5, SLES 15 SP4 and previous; Support Ubuntu 22.04 LTS, 20.04 LTS and Debian 11; Support Free BSD 14.0~13.3, 13.1 - 13.2, 12.0 - 12.3; Support all VMWare ESXI editions.
6. ATTENTION: 1. PCIE x8 interface, works on PCIE x8, x16 slot. 2. Low profile bracket in the package and full height bracket mounted on X520-DA2 network adapter. Compatible with standard size PCs and low-profile PCs.

Full Specifications

Brand	FebSmart
Color	Matte Green
Unit Count	1.0 Count
Model Number	X520-DA2
Compatibility	PC, Linux
Built-In Media	1X X520-DA2, 1X Low Profile Bracket, 1X User Manual, 1X Mount Screw, 1X Mini CD.
Mfr Part Number	X520-DA2
Number of Packs	1
Compatible Devices	Desktop
Data Link Protocol	Ethernet, IEEE 802.3
Data Transfer Rate	10 Gigabits Per Second
Hardware Interface	Ethernet, PCIE x 8
Item Dimensions L x W x H	4.72"L x 4.53"W x 0.72"H

Ready to buy?

PCIE x8 Interface to 2X 10GbE SFP+ Optical Port Network Adapter for Desktop PC, Intel 82599ES 2X 10Gb/s Ethernet Controller, 10GbE PCIE NIC Card for Gaming, 10Gb/s SFP+ PCIE LAN Adapter (X520-DA2) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.