Add-on Card AOC-S25G-m2S
Products Accessories [ AOC-S25G-m2S ]
Add-on Card

The Supermicro AOC-S25G-m2S is a leading edge 25GbE controller. Based on the Mellanox ConnectX®-4 Lx EN chipset with features that such as VXLAN and NVGRE, it is backward compatible with 10GbE networks and addresses bandwidth demand from virtualized infrastructures in data center or cloud deployments. It supports the RoCE specification with CPU offload, delivering low-latency and high-performance over Ethernet networks. Supermicro® Asset Management and thermal detection give an extra layer of controller health management and peace of mind. The Supermicro AOC-S25G-m2S high performance 25GbE adapter solution is an excellent choice to enhance network connectivity in data centers and enterprise environments.

This product is only available through Supermicro.
Key Features

• Dual SPF28 Connectors
• Low-Profile, Short Length Standard Form Factor
• PCI-E 3.0 x8
• Mellanox ConnectX®-4 Lx EN Ethernet Controller
• Asset Management Features with thermal sensor
• Hardware offloads for VXLAN, NVGRE and GENEVE
encapsulated traffic
• Low latency RDMA over Converged Ethernet (RoCE)
• PCI-SIG SR-IOV compliant
• Jumbo Frames support up to 9.6kB
• PXE Support
• Erasure Coding Offload
• NC-SI for IPMI support
• RoHS compliant 6/6
  • RoHS Compliant 6/6, Pb Free
Datasheet [ Download ]
Driver Choose the latest CDR-NIC folder, and then click on Intel & Mellanox folder for driver [ Download ]
Driver CD Click on the latest CDR-NIC ISO file to download [ Download ]
Compatibility Matrices
Compatible Servers
Standard Networking AOC Compatibility
Top of rack Switch SSE-F3548S / SSE-F3548SR (54 ports)



   - Mellanox ConnectX®-4 Lx EN dual-port 25Gbps controller
   - Compact size low-profile standard form factor
   - PCI-E x8 3.0 (8GT/s, 5GT/s or 2.5GT/s) interface
   - Dual SFP28 connectors
   - Typical power consumption: 8.7W

Host Interface

   - PCI-E 3.0
   - Message Signal Interrupt (MSI-X)

Networking features

   - 25G Ethernet Consortium 25 Gigabit Ethernet
   - IEEE802.3ae 10 Gigabit Ethernet
   - IEEE802.3az Energy Efficient Ethernet
   - IEEE 802.3ap based auto-negotiation and KR startup
   - IEEE, 802.1AX Link Aggregation
   - IEEE 802.1Q, 802.1p VLAN tags and priority
   - IEEE802.1Qau (QCN) ¡V Congestion Notification
   - IEEE 802.1Qaz (ETS)
   - IEEE 802.1Qbb (PFC)
   - IEEE 802.1Qbg
   - IEEE 1588v2
   - Jumbo frame support (9.6KB)

CPU Offload Features

   - RDMA over Converged Ethernet (RoCE)
   - TCP/UDP/IP stateless offload
   - LSO, LRO, checksum offload
   - RSS, TSS, HDS, VLAN insertion/stripping. Receive flow
   - Intelligent interrupt coalescence

Storage Offloads

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

Management Features

   - Asset Management features with thermal sensor
   - NC-SI for IPMI Support

Overlay Networks

   - Stateless offloads for overlay networks and tunneling protocols
   - Hardware offload of encapsulation and decapsulation of NVGRE
     and VXLAN overlay networks

Hardware-Based I/O Virtualization

   - Single Root IOV
   - Multi-function per port
   - Address translation and protection
   - Multiple queues per virtual machine
   - Enhanced QoS for vNICs
   - VMware NetQueue support

Virtualization Features

   - SR-IOV: up to 256 Virtual Functions
   - SR-IOV: up to 16 Physical Functions per port
   - 1K ingress and egress QoS levels
   - Guaranteed QoS for VMs

Operating System Support

   - RHEL/CentOS
   - Windows
   - FreeBSD
   - VMware
   - OpenFabrics Enterprise Distribution (OFED)
   - OpenFabrics Windows Distribution (WinOF-2)

Remote Boot

   - Remote boot over iSCSI
   - PXE and UEFI

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 35°C

Physical Dimensions

   - Card PCB dimensions: 14.2cm x 6.89cm (5.6in x 2.71in) (LxW)
   - Height of end brackets: standard - 12cm (4.725in),
low-profile - 8cm (3.15in)


   - 89.58g (0.1975lb)

Supported Platforms

   - Motherboards with minimum PCI-E 3.0 x 8 expansion slot
   - Server Systems with LP/FH PCI-E 3.0 x 8 expansion slot
   - NC-SI feature is only supported by Supermicro® motherboards with corresponding NC-SI connectors

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
NC-SI Cable CBL-OTHR-0795 - 14CM NC-SI Cable (cable is not supported in all motherboards)
Information in this document is subject to change without notice.
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