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Green PCB quad-port network card with four silver SFP28 cages and a gold PCIe x16 edge connector

Broadcom

Broadcom BCM957504-P425G quad-port 25 Gb/s SFP28 PCIe 4.0 x16 network card

SKU CH-ZJTN-NHMDV MPN BCM957504-P425G

Quad-port 25 Gb/s SFP28 PCIe 4.0 x16 NIC with 16 physical functions, TruFlow engine and BroadSAFE silicon root of trust

  • Speed25Gbps
  • Connectors4 x SFP28
  • InterfacePCI-Express
  • FeaturesStandards-compliant 25/10G quad-port SFP28 PCIe NIC with lin
  • Four 25 Gb/s ports deliver line-rate full-duplex throughput
  • NIC partitioning creates 16 physical functions for flexible virtualization
  • TruFlow engine accelerates vSwitch processing to raise VM density
  • BroadSAFE silicon root of trust provides hardware-level platform security
  • Hardware congestion avoidance eliminates bottlenecks before they form

Quad-Port 25 Gb/s SFP28 NIC

The Broadcom BCM957504-P425G is a quad-port 25 Gb/s SFP28 network interface card built for enterprise and cloud-scale servers. It delivers line-rate, full-duplex throughput across four ports using a PCIe 4.0 x16 interface. The card supports 25/10G speeds and NIC partitioning with 16 physical functions. It targets high-performance computing, storage disaggregation and virtualized workloads.

Installation notes

The card installs into a PCIe 4.0 x16 slot and requires compatible SFP28 transceivers or direct-attach cables for each active port. Ensure the server chassis provides adequate airflow for the bracket and that the BIOS or firmware recognises the additional PCIe lanes. Common issues include using SFP+ modules instead of SFP28, or inserting the card into an x8 electrical slot which halves available bandwidth. Driver support must be verified for the target operating system and hypervisor.

Pre-order checks

Confirm the host server has a free PCIe 4.0 x16 slot with full electrical width and that the power budget covers the card's draw. Verify that the switch or peer device supports 25 Gb/s or 10 Gb/s Ethernet on SFP28 interfaces. Check that the required transceivers match the link distance and fibre type in use. Ensure the OS kernel or hypervisor includes driver support for Broadcom's TruFlow engine and NIC partitioning features.

Highlights

  • Four 25 Gb/s ports deliver line-rate full-duplex throughput
  • NIC partitioning creates 16 physical functions for flexible virtualization
  • TruFlow engine accelerates vSwitch processing to raise VM density
  • BroadSAFE silicon root of trust provides hardware-level platform security
  • Hardware congestion avoidance eliminates bottlenecks before they form

Specifications

BrandBroadcom
ModelBCM957504-P425G
Speed25Gbps
Connectors4 x SFP28
InterfacePCI-Express
FeaturesStandards-compliant 25/10G quad-port SFP28 PCIe NIC with line-rate, full-duplex throughput
NIC partitioning supporting 16 physical functions (PFs)
TruFlow engine for intelligent flow processing to increase server VM density and accelerate vSwitch processing
Industry's most secure PCIe NIC solution leveraging Broadcom's BroadSAFE technology to provide unparalleled platform security via Silicon Root of Trust
New end-to-end congestion avoidance and management to anticipate and eliminate congestion before it happens
Support for advanced networking technologies including RoCE, SDN, NFV an
Shipping weight0.27 kg
Package size241 × 165 × 32 mm

Questions about this item

How do I verify the NIC partitioning is exposing all 16 physical functions after driver installation?

Check the OS device manager or ethtool output; the BCM957504-P425G should enumerate 16 PFs across its four 25 Gb/s SFP28 ports when the driver loads correctly.

Which transceivers and cables must be purchased separately to use the four SFP28 ports?

The card ships with four empty SFP28 cages; you must supply 25 Gb/s or 10 Gb/s SFP28 transceivers and matching fibre or direct-attach cables for each active port.

Should I choose this BCM957504-P425G or a dual-port 25 Gb/s card for a PCIe 4.0 x16 slot?

The BCM957504-P425G uses a full x16 link for four 25 Gb/s ports; select it when you need maximum port density per slot, otherwise a dual-port model leaves bandwidth unused.

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