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Broadcom dual-port OCP 3.0 SFF network card with two QSFP56 cages

Broadcom

Broadcom BCM957508-N2100G dual-port 100 Gb/s PCIe 4.0 x16 OCP 3.0 SFF network card

SKU CH-KP17-N4XR2 MPN BCM957508-N2100G

Dual-port 100 Gb/s OCP 3.0 adapter with QSFP56 connectors, PCIe 4.0 x16, supporting speeds down to 10 Gb/s and 16 physical functions

  • Rated speed100 Gbit/s
  • Connection typesQSFP56
  • Key featuresAdapter Type: OCP 3.0 OS Support: CentOS, Debian, Microsoft

Model N2100G

Connector QSFP56

Speed 2x 100G

  • Dual-port 100 Gb/s throughput for high-density server networking
  • PCI Express 4.0 x16 delivers line-rate full-duplex performance
  • OCP 3.0 SFF form factor fits modern rack-scale deployments
  • QSFP56 connectors support 200, 100, 50, 40, 25, 10 G speeds
  • NIC partitioning with 16 physical functions boosts virtual machine density

Dual-port 100 Gb/s OCP 3.0 SFF adapter

The Broadcom BCM957508-N2100G provides two QSFP56 ports running at up to 100 Gb/s each over a PCIe 4.0 x16 interface. It conforms to the OCP 3.0 small form factor specification and supports QSFP56, QSFP28 and QSFP+ modules or direct-attach cables. The card targets servers and storage clusters that need high-density 100 GbE connectivity.

Sustained line-rate throughput

The integrated BCM57508 controller delivers line-rate, full-duplex performance at 200, 100, 50, 40, 25 and 10 Gb/s without throttling under continuous load. TruFlow engine offloads vSwitch processing and supports 16 physical functions, increasing VM density while keeping CPU utilisation low. BroadSAFE silicon root of trust and end-to-end congestion management maintain consistent latency and security during prolonged traffic bursts.

Verify OCP 3.0 slot, PCIe 4.0 x16 wiring

Confirm the server chassis provides an OCP 3.0 SFF mezzanine slot with a PCIe 4.0 x16 electrical link; narrower links will reduce available bandwidth. Ensure the operating environment supplies adequate airflow for the adapter’s thermal design. Select QSFP56, QSFP28 or QSFP+ transceivers or DACs rated for the desired speed and reach, and check that the host OS appears in the supported list.

How it compares

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

Price $786.99
Pricier than about 90% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameBroadcom
Model nameN2100G
Part numberBCM957508-N2100G
Performance
Rated speed100 Gbit/s
Ports & slots
Connection typesQSFP56
Size & build
Shipping weight0.91 kg
Package size178 × 127 × 76 mm

Other versions of this model

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Questions about this item

How much heat does the BCM957508-N2100G generate when running at 100 Gb/s all day?

The adapter uses a Broadcom BCM57508 controller with integrated dual-channel 100GbE SFI transceivers, designed for line-rate full-duplex throughput in an OCP 3.0 SFF form factor. Power draw scales with link speed and cable type.

What host slot is required for the BCM957508-N2100G to operate at 100 Gb/s per port?

A PCI Express 4.0 x16 slot is needed. The card follows the OCP 3.0 small form factor specification and presents two QSFP56 cages for modules or direct-attach cables.

Will the BCM957508-N2100G work with 25 Gb/s or 40 Gb/s switches I already own?

Yes. The adapter supports standards-compliant 200, 100, 50, 40, 25 and 10 Gb/s speeds. QSFP56 cages accept QSFP56, QSFP28 and QSFP+ modules or copper cables for backward compatibility.

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