Add-on Card AOC-S25G-b2S
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Add-on Card

The Supermicro AOC-S25G-b2S is one of the most feature rich and versatile 25GbE controllers in the market. Based on the Broadcom® BCM57414 chipset with features such as VXLAN, NVGRE, and RoCE it is backward compatible with 10GbE network and the most cost effective upgrade from 10GbE to 25GbE in data center or cloud deployments. The unique features including TruFlow and NPAR (NIC Partitioning) technology provide flexible connectivity for different networking requirements. SupermicroR Asset Management and thermal detection give the extra layer of controller health management and a peace of mind. The Supermicro AOC-S25G-b2S is one of the most versatile 25GbE controllers in the market and an excellent choice to enhance network connectivity in data centers and enterprise environments.

This product is only available through Supermicro.
Key Features

• Dual SFP28 Connectors

• Low-Profile, Short Length Standard Form Factor

• PCI-E 3.0 x8 interface

• Asset Management Features with thermal sensor

• Broadcom Dual-Port 25 Gbps PCI Express Gen3 Ethernet


• Data Center Bridging (DCB)

• IEEE1588 Time Sync

• TruFlow



• RDMA over Converged Ethernet (RoCE)

• NetQueue, VMQueue, and Multiqueue

• PCI-SIG SR-IOV compliant

• Jumbo Frames support up to 9600-Byte

• NC-SI for IPMI support

• RoHS compliant 6/6


  • RoHS Compliant 6/6, Pb Free
User's Guide [ Download ]
Datasheet [ Download ]
Driver Choose the latest CDR-NIC folder, and then click on the Broadcom folder for driver [ Download ]
Driver CD Click on the latest CDR-NIC ISO file to download [ Download ]
Compatibility Matrices
Cables & Transceivers

Networking Cables & Transceivers
Top of rack Switch SSE-F3548S / SSE-F3548SR (54 ports)



   - Broadcom BCM57414 dual-port 25Gbps controller

   - Compact size low-profile standard form factor

   - PCI-E 3.0 x8 (8GT/s, 5GT/s or 2.5GT/s) interface

   - Dual SFP28 connectors

   - Typical power consumption: 5.2W

Host Interface

   - PCI-E v3.0 (8GT/s)

   - MCTP over SMBus

   - Function Level Reset (FLR) support

   - Message Signal Interrupt (MSI-X)

Networking features

   - Jumbo frames (up to 9600-Byte)

   - 802.3x flow control

   - Link Aggregation (802.3ad)

   - Virtual LANs – 802.1q VLAN tagging

   - Configurable Flow Acceleration

   - IEEE 1588 and Time Sync

Stateless Offload Features

   - TCP, UDP, IPv4, IPv6 checksum offload

   - Large Send Offload

   - Receive Segment Coalescing

   - TCP segmentation Offload

   - Large Receive Offload

   - Receive Side Scaling (RSS)

   - Transmit Side Scaling (TSS)

NIC Partitioning (NPAR)

   - 16 Physical Functions

   - QoS per partition

   - Partitioning control via sideband communication

   - Up to 64 MAC/VLAN filter per partition

   - Per partition statistics support

   - Stateless offloads configuration per partition

   - VEB/VEPA support

Virtualization Features

   - NetQueue, VMQueue, and Multiqueue

   - Support for 128 Virtual Functions

   - VXLAN

   - NVGRE

   - Geneve

   - Edge Virtual Bridging (EVB)

Flow Processing

   - Exact/Wildcard Match Flow Lookup

   - VLAN insertion/deletion


   - Mirroring

Data Center Bridging

   - Priority-based flow control (PFC; IEEE 802.1Qbb)

   - Enhanced transmission selection (ETS; IEEE802.1Qau)

   - Quantized congestion Notification (QCN; IEEE802.1Qau)

   - Data Center Bridging Capability eXchange (DCBX;


   - 8 traffic classes per port; fully DCB compliant per 802.1Qbb


   - Network Controller Sideband Interface (NC-SI)

   - PXE v2.1 remote boot

   - Asset Management with Thermal Sensors

Power Savings

   - ACPI compliant power management

   - PCI Express Active State Power Management (ASPM)

   - Ultra low-power mode

Operating Conditions

   - Storage temperature: -40°C to 70°C (-40°F to 158°F)

   - Storage humidity: 90% non-condensing relative humidity at 35°C

Physical Dimensions

   - Card PCB dimensions: 14.224cm x 6.89cm (5.6in x 2.71in)


   - Height of end brackets: standard – 12cm (4.725in), low-profile

     – 8cm (3.15in)


   - 90.5g (0.2lb)

Information in this document is subject to change without notice.

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