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Intel X520-SR2 10Gbps PCI-Express network card, black bracket, dual SFP+ ports

Intel

Intel X520SR2BPLBLK 10Gbps PCI-Express network card

SKU CH-PAD2-7V7YN MPN X520SR2BPLBLK

Dual-port 10Gbps PCI-Express network adapter with automatic bypass for uninterrupted traffic during system failures

  • Rated speed10 Gbit/s
  • Interface typePCI-Express
  • Key featuresProduct Type:10Gigabit Ethernet Card
  • 10 Gbps throughput for high-bandwidth workloads
  • PCI-Express interface for direct motherboard connection
  • Bypass capability maintains traffic during system failure
  • Automatic fail-over on power or hardware fault
  • Intel X520 reliability for server environments

Intel X520-SR2 10Gbps PCI-Express Adapter

The Intel X520-SR2 is a 10Gbps network interface card built for servers and workstations that require high-throughput Ethernet connectivity. It installs into a PCI-Express slot and provides dual-port SFP+ connectivity for fibre links. The adapter targets IT environments where low latency and reliable 10 Gigabit Ethernet performance are essential for daily operations.

Dual-port SFP+ design fits standard server slots

The card occupies a single PCI-Express expansion slot and presents two SFP+ cages for compatible transceiver modules. This layout frees up additional slots by consolidating two 10GbE links onto one bracket. Bypass circuitry maintains the optical path during a host power, hardware, or software failure so that network traffic continues flowing while the fault is diagnosed.

Upgrades 1GbE links and adds fail-open resilience

The adapter replaces single-port 1GbE or earlier 10GbE cards that lack bypass functionality, delivering tenfold bandwidth plus automatic fail-open protection. The jump is worth it when a single point of failure in the network path cannot be tolerated and continuous link uptime is a hard requirement for the deployment.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $1,034.99
Pricier than about 91% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameIntel
Model nameX520-SR2
Performance
Rated speed10 Gbit/s
Ports & slots
Interface typePCI-Express
Size & build
Shipping weight1.36 kg
Package size25 × 25 × 25 mm

Questions about this item

Does the Intel X520-SR2 include a thermal-throttle limit that would cap sustained 10 Gbps throughput?

No thermal-throttle limit is documented for the Intel X520-SR2; the card is rated for continuous 10 Gbps operation without speed reduction.

How much heat does the Intel X520-SR2 generate when running at full 10 Gbps load all day?

The Intel X520-SR2 uses a passive heatsink and draws modest power, so it runs quietly with minimal temperature rise under sustained 10 Gbps traffic.

What cabling and transceiver modules must I already own to use the Intel X520-SR2?

You need two SFP+ SR optics and a multimode fibre patch cable with LC connectors to connect the Intel X520-SR2 at 10 Gbps.

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