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Green PCB network adapter with two SFP+ cages and a PCIe x8 gold-finger edge

Intel

Intel E10G42BTDABLK X520-DA2 10 Gbps dual SFP+ expansion card

SKU CH-DNHZ-NAHJ4 MPN E10G42BTDABLK

Adds two 10 Gbps SFP+ ports via a PCI Express x8 slot for fiber or DAC links

  • External connectors2 × SFP+ (10Gb fiber or DAC support)
  • Internal portsPCI Express x8 slot
  • Supported standardsIEEE 802.3ae, IEEE 802.3ap, IEEE 802.3an, IEEE 802.3ad
  • Transfer speedUp to 10 Gbit/s per port
  • Supported operating systemsWindows, Linux, VMware ESXi, FreeBSD
  • Product typeEthernet Adapter
  • Dual 10 Gbps SFP+ ports for high-speed networking
  • PCI Express x8 interface fits desktop and server systems
  • Supports SFP+ 10Gb fiber or direct-attach copper cables
  • Compatible with Windows, Linux, VMware ESXi and FreeBSD
  • Compact 6.6 in × 2.7 in low-profile design

Dual 10 Gbps SFP+ Network Adapter

The Intel X520-DA2 adds two 10 Gbps SFP+ ports to a desktop or server through a PCI Express x8 slot. It supports fiber or direct-attach copper links and works with Windows, Linux, VMware ESXi and FreeBSD. The card measures 6.6 in by 2.7 in and weighs 0.5 lb.

Suited for high-speed links.

This adapter targets users who need dual 10 Gbps Ethernet connectivity via SFP+ transceivers or DAC cables. It provides no external or internal USB ports and no 1394 ports. Buyers who need additional USB or FireWire expansion should look at a different type of add-on card.

PCI Express x8 slot required

Installation requires a motherboard with an available PCI Express x8 or larger slot. The board will not fit or function in x1 or x4 slots. Verify the slot type before purchase.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 67% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameIntel
Product lineX520-DA2
Model nameX520-DA2
Product typeEthernet Adapter
Performance
Transfer speedUp to 10 Gbit/s per port
Connectivity
Supported standardsIEEE 802.3ae, IEEE 802.3ap, IEEE 802.3an, IEEE 802.3ad
Ports & slots
External USB portsNone
Internal USB portsNone
External 1394 portsNone
Internal 1394 portsNone
External connectors2 × SFP+ (10Gb fiber or DAC support)
Internal portsPCI Express x8 slot
Size & build
Product dimensions6.6 in × 2.7 in
Product weight0.5 lb (0.23 kg)
Compatibility
Supported operating systemsWindows, Linux, VMware ESXi, FreeBSD
Compatible withDesktop and server systems with a PCI Express x8 or higher slot; supports SFP+ 10Gb fiber or DAC connections

Questions about this item

Do I need a free PCI Express x8 slot on my motherboard to install the X520-DA2?

Yes, the card requires a PCI Express x8 or larger slot; it fits desktop and server boards that provide that connector.

Will the adapter link at 10 Gbps with my existing SFP+ direct-attach cables?

The two SFP+ ports support 10 Gbps fiber or DAC links, so compatible cables will negotiate the full rate.

How can I verify each port is running at 10 Gbps after driver installation?

Check the adapter status in the OS network control panel or ethtool output; both should report a 10 Gbps link speed.

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