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Green PCB network card, silver bracket, two SFP+ cages, PCIe x8 edge connector

Intel

Intel E10G42BTDABLK X520-DA2 10Gb dual-port SFP+ expansion card

SKU CH-XCQ5-7GNT5 MPN E10G42BTDABLK

Adds two 10 Gbps SFP+ ports via a PCI Express x8 slot for 10 Gigabit Ethernet or converged networking

  • 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 typePCI Express to Ethernet Port Card
  • 10 Gbps per port for high-speed networking
  • dual SFP+ ports support fiber or DAC connections
  • PCI Express x8 interface fits desktops and servers
  • IEEE 802.3 standards ensure broad compatibility
  • low-profile bracket included for compact builds

Dual-port 10Gb SFP+ network adapter

The Intel X520-DA2 adds two 10 Gbps Ethernet connections through a single PCI Express x8 slot. It targets workstations and servers that need high-throughput links for storage, virtualization or backup traffic.

Low-profile bracket included

A half-height bracket ships in the box so the card fits 2U rackmount chassis or slim desktop cases without extra parts. No transceivers or cables are bundled; SFP+ modules or direct-attach copper must be sourced separately.

Verify slot length and OS driver support

The board requires a physical x8 or longer PCIe slot and draws power from the bus alone. Confirm that your Windows, Linux, VMware ESXi or FreeBSD installation includes the Intel ixgbe driver or can load it from the vendor repository.

How it compares

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

Price $45.99
Pricier than about 68% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameIntel
Product lineX520-DA2
Model nameX520-DA2
Product typePCI Express to Ethernet Port Card
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 × 0.7 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
In the box
In the boxIntel X520-DA2 Dual-Port 10Gb Ethernet Network Adapter
Low-profile bracket

Questions about this item

Will the SFP+ modules or direct-attach cables need periodic replacement on the X520-DA2?

The card itself has no moving parts; SFP+ transceivers or DAC cables are separate consumables and should be replaced only if link errors or physical damage appear.

What limits sustained throughput on the X520-DA2 during continuous 10 Gbps traffic?

Each port is rated for up to 10 Gbps and the PCI Express x8 interface provides sufficient bandwidth, so the practical limit is the attached switch or storage device.

How much heat and power does the X520-DA2 generate when running all day?

The adapter is a passive PCIe x8 card with no onboard fan; typical draw is modest and it relies on system airflow for cooling.

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