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Green circuit board with silver metal bracket and two SFP+ ports

DELL

DELL X520-DA2 10 Gbps Dual-Port SFP+ PCIe x8 Expansion Card

SKU CH-E3VG-FTH0F MPN X520-DA2

Adds two 10 Gbps SFP+ ports via a PCIe x8 slot for desktop or server 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
  • Dual 10 Gbps SFP+ ports deliver high-throughput networking
  • PCI Express x8 interface fits standard desktop and server slots
  • Broad OS support covers Windows, Linux, VMware ESXi and FreeBSD
  • Compact 6.6 × 2.7 × 0.7 in form factor suits low-profile builds
  • IEEE 802.3ae, 802.3ap, 802.3an and 802.3ad compliance ensures interoperability

Dual-Port 10 Gbps SFP+ Adapter

The Intel X520-DA2 adds two 10 Gbps Ethernet ports to a desktop or server through a PCI Express x8 slot. It accepts SFP+ transceivers or direct-attach cables for fiber or copper links. The card targets administrators who need high-throughput networking for storage clusters, virtualization hosts or backup networks.

IEEE 802.3ae and 802.3an limits

Each port runs at up to 10 Gbps under the 10GBASE-R and 10GBASE-T families of standards. Distance and cable type depend entirely on the SFP+ module chosen; the adapter itself does not dictate reach. Link aggregation under 802.3ad can combine both ports for redundancy or extra throughput when the switch supports it.

PCIe x8 slot and SFP+ module check

Verify the host has a free PCI Express x8 or wider slot and that the bracket height matches the chassis. Select SFP+ optics or DAC cables rated for the required distance and fiber type before ordering. The operating system must include or accept drivers for Windows, Linux, VMware ESXi or FreeBSD.

How it compares

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

Price $51.99
Pricier than about 71% 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

Should I pick a single-port or dual-port 10 Gbps SFP+ card for my server?

This card provides two SFP+ ports, each capable of 10 Gbps, so you can run two independent 10 GbE links or aggregate them for 20 Gbps throughput.

What does the 10 Gbps per port rating mean when the card is installed in a live system?

Each SFP+ port can deliver up to 10 Gbps of Ethernet throughput, limited by the PCIe x8 host slot and the SFP+ transceiver or DAC cable you install.

Will the PCIe x8 interface bottleneck the dual 10 Gbps ports in practice?

A PCIe x8 slot provides ample bandwidth for two 10 GbE ports, so the interface does not cap the 10 Gbps per-port rate under normal loads.

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