Add-on Card AOC-C25G-m1S
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Add-on Card

The Most Compact 25GbE Adapters in the Market

The Supermicro AOC-C25G-m1S, based on Mellanox® ConnectX-4 Lx EN controller, is the most advanced and compact 25GbE solution for our high density MicroCloud and Twin series servers. With MicroLP form factor and lower power consumption, it can fit in compact space-efficient server areas yet still provide the highest networking bandwidth for data centers. It is backward compatible with 10GbE networks and represents the most cost effective upgrade from 10GbE to 25GbE. The AOC-C25G-m1S, designed to provide the best performance and optimized Cloud efficiency, is an excellent choice for customers who need to expand their networks with the highest bandwidth connectivity.

This product is only available through Supermicro.
Key Features

• Single SFP28 Connector

• MicroLP Form Factor

• PCI Express 3.0 x8 (8GT/s)

• Hardware offloads for NVGRE, VXLAN and GENEVE

  encapsulated traffic

• SR-IOV for virtualization

• Low latency RDMA over Converged Ethernet (RoCE)

• Jumbo Frames support

• NC-SI for remote management

• Support Direct Attach Copper and Fiber Cables

• RoHS compliant 6/6


  • RoHS Compliant 6/6, Pb Free
User's Guide Download ]
Datasheet Download ]
Firmware Download ]
Driver Choose the latest CDR-NIC folder, and then click on Mellanox folder for driver [ Download ]
Driver CD Click on the latest CDR-NIC ISO file to download [ Download ]
Top of rack Switch SSE-F3548S / SSE-F3548SR (54 ports)
Supported Platforms

Supermicro FatTwin and MicroCloud Systems with MicroLP expansion slot:

MicroLP Compatibility Matrix



   - Mellanox® ConnectX-4 Lx EN controller

   - MicroLP form factor

   - PCI-E 3.0 x8 (8GT/s) interface

   - Single SFP28 connector with speed up to 25Gbps per port


   - 25GbE / 10GbE / 1GbE

   - IEEE 802.3ad, 802.1AX Link Aggregation

   - IEEE 802.1Q, 802.1P VLAN tags and priority

   - IEEE 1588v2

   - Jumbo frame support (9.6KB)

Enhanced Features:

   - Hardware-based reliable transport

   - Collective operations offloads

   - Vector collective operations offloads

   - 64/66 encoding

   - Dynamically Connected transport (DCT)

   - Enhanced Atomic operations

   - Support for MSI/MSI-X mechanisms

Storage Offloads

   - RAID offload - erasure coding (Reed-Solomon) offload

Overlay Networks:

   - Stateless offloads for overlay networks and tunneling


   - Hardware offload of encapsulation of NVGRE and VXLAN

     overlay networks

Hardware-based I/O Virtualization:

   - Single Root IOV

   - Multi-function per port

   - Multiple queues per virtual machine

   - VMware NetQueue support


   - SR-IOV: Up to 256 Virtual Functions

   - SR-IOV: Up to 16 Physical Functions per port

CPU Offloads:

   - RDMA over Converged Ethernet (RoCE)

   - TCP/UDP/IP stateless offload

   - LSO, LRO, checksum offload

   - RSS (can be done on encapsulated packet), TSS, HDS, VLAN

     insertion/stripping, Receive flow steering

   - Intelligent interrupt coalescence

Management Features:

   - Remote boot over iSCSI

   - PXE and UEFI

   - NC-SI for remote management

OS Support

   - RHEL/CentOS (7.2, 7.1, 7.0, 6.8, 6.7, 6.6, 6.5, 6.2)

   - Windows (2012 R2, 2012)

   - FreeBSD (11)

   - VMware (6.5, 5.5)

Cables Support

   - Direct attach twinaxial copper cables

   - Fiber-optic cables (with required optional transceivers)

Power Consumption

   - AOC-C25G-m1S: Maximum 8.5W

Operating Conditions

   - Operating temperature: 0°C to 55°C (32°F to 131°F)

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

   - Storage humidity: 90% non-condensing relative humidity at


Physical Dimensions:

   - Card PCB dimensions:

     11.3cm (4.45in) x 3.9cm (1.54in) (L x H)

Parts List
  Part Number Qty Description
Add-on Card AOC-C25G-m1S 1 1-port 25 Gigabit Ethernet Adapter
Bracket BKT-0051L


MicroLP PCB Bracket (pre-installed)

IO bracket for 1U system (pre-installed)

Optional Parts List
  Part Number Qty Description
SFP28 Copper Cable CBL-NTWK-0944-MS28C05M - 0.5m 25GbE SFP28 to SFP28, Passive
SFP28 Copper Cable CBL-NTWK-0944-MS28C10M - 1m 25GbE SFP28 to SFP28, Passive
SFP28 Copper Cable CBL-NTWK-0944-MS28C15M - 1.5m 25GbE SFP28 to SFP28, Passive
SFP28 Copper Cable CBL-NTWK-0944-MS28C20M - 2m 25GbE SFP28 to SFP28, Passive
SFP28 Copper Cable CBL-NTWK-0944-MS28C25M - 2.5m 25GbE SFP28 to SFP28, Passive
SFP28 Copper Cable CBL-NTWK-0944-MS28C30M - 3m 25GbE SFP28 to SFP28, Passive
SFP28 Transceiver Module AOM-SFP28-25GbE-SR-1-MLN - SFP28 Transceiver module 25G, 850nm, MMF, LC

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