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NVIDIA ConnectX-6 Lx MCX631102AS-ADAT 25G Ethernet SmartNIC | Single-Port 25GbE Adapter
Product Details:
| Brand Name: | Mellanox |
| Model Number: | MCX631102AN-ADAT |
| Document: | connectx-6-infiniband.pdf |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1pcs |
|---|---|
| Price: | Negotiate |
| Packaging Details: | outer box |
| Delivery Time: | Based on inventory |
| Payment Terms: | T/T |
| Supply Ability: | Supply by project/batch |
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Detail Information |
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| Products Status: | Stock | Condition: | New And Original |
|---|---|---|---|
| Technology: | Ethernet | Network Interface: | Two SerDes Lanes Supporting 25Gb/s Per Lane, For Various Port Configurations: -2x 10/25 GbE -1x 50GbE |
| Host Interface: | PCIe Gen 4.0, 3.0, 2.0, 1.1 16.0, 8.0, 5.0, 2.5 GT/s Link Rate 8 Lanes Of PCIe MSI/MSI-X Mechanisms Advanced PCIe Capabilities | Speed: | 25Gbps |
| Connectors: | 2 X SFP28 | Interface: | PCIe 4.0 X8 |
| Highlight: | NVIDIA ConnectX-6 Lx 25G Ethernet SmartNIC,Single-Port 25GbE Adapter,Nvidia Network Card with warranty |
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Product Description
NVIDIA ConnectX-6 Lx MCX631102AS-ADAT 25G Ethernet SmartNIC
Single-Port 25GbE Adapter with RoCE, Secure Boot & PCIe Gen4 x8
The NVIDIA ConnectX‑6 Lx MCX631102AS‑ADAT is a high‑performance 25GbE Ethernet SmartNIC designed for modern enterprise and cloud data centers. It delivers line‑rate 75Mpps message rate, advanced RoCE, SDN acceleration with ASAP2, and hardware root‑of‑trust for secure boot - all in a low‑profile PCIe form factor.
Product Overview
The NVIDIA ConnectX‑6 Lx MCX631102AS‑ADAT is a single‑port 25GbE SmartNIC that delivers up to 25Gb/s bandwidth. Built on PCIe Gen4 x8 host interface, it delivers cutting‑edge performance for virtualized and containerized cloud data centers. The adapter features ASAP2 (Accelerated Switch and Packet Processing) for SDN offload, Zero‑Touch RoCE for simplified RDMA deployment, and hardware root‑of‑trust with secure firmware updates to protect against supply chain threats.
Key Features
- Port configuration: 1× 10/25GbE SFP28
- Total bandwidth: Up to 25Gb/s
- Message rate: 75Mpps line‑speed
- Host interface: PCIe Gen4 x8 (backward compatible to Gen3 x8)
- Form factor: Low‑profile PCIe
- RoCE: Zero‑Touch RoCE (ZTR) with PFC/ECN auto‑configuration
- SDN acceleration: ASAP2 for VXLAN, GENEVE, NVGRE
- Virtualization: SR‑IOV, VirtIO, connection tracking (L4 firewall)
- Security: Hardware root‑of‑trust, secure firmware update
- Management: NC‑SI, MCTP, PLDM, remote boot (iSCSI, PXE, UEFI)
Technology & Design
The ConnectX‑6 Lx ASIC integrates advanced acceleration engines that offload the host CPU for networking and storage workloads. ASAP2 technology enables full SDN data‑plane offload, supporting overlay encapsulations (VXLAN, GENEVE, NVGRE). The adapter features a programmable flexible parser, flow mirroring, sampling, statistics, and hierarchical QoS. Hardware root‑of‑trust with secure boot and firmware updates using RSA cryptography protects the supply chain and guarantees firmware authenticity - a critical feature for security‑conscious enterprise deployments.
Typical Deployments
- Enterprise data centers: 25GbE server connectivity for virtualization and cloud workloads
- AI/ML clusters: RoCE‑based low‑latency storage and compute interconnects
- Software‑defined storage: High‑performance NVMe‑over‑Fabrics with RoCE
- Cloud service providers: Cost‑effective 25G connectivity for public and private clouds
- Security‑sensitive environments: Hardware root‑of‑trust ensures firmware integrity from boot
Compatibility
Host interface: PCIe Gen4 x8 (compatible with Gen3 x8)
Operating systems: Linux (RHEL, Ubuntu, SLES), Windows Server, VMware ESXi, and other major enterprise OS platforms
Switches: NVIDIA Spectrum™ series Ethernet switches and third‑party 25GbE switches
Form factor: Standard low‑profile PCIe bracket
For detailed compatibility and validated configurations, refer to the NVIDIA compatibility list.
Specifications
| Parameter | Value |
|---|---|
| Product Type | Ethernet SmartNIC |
| Chipset | NVIDIA ConnectX‑6 Lx |
| Port Configuration | 1× 10/25GbE SFP28 |
| Total Bandwidth | Up to 25Gb/s |
| Message Rate | 75 Mpps (line‑rate) |
| Host Interface | PCIe Gen4 x8 (backward compatible to Gen3 x8) |
| Form Factor | Low‑profile PCIe |
| Connectivity | SFP28 (single‑port) |
| RoCE | Zero‑Touch RoCE (ZTR) with PFC/ECN auto‑config |
| SDN Offload | ASAP2: VXLAN, GENEVE, NVGRE |
| Virtualization | SR‑IOV, VirtIO, connection tracking (L4 firewall) |
| Security | Hardware root‑of‑trust, secure firmware update (RSA) |
| Management | NC‑SI, MCTP (SMBus/PCIe), PLDM |
| Remote Boot | iSCSI, PXE, UEFI (x86/Arm) |
| Power | Please confirm before ordering |
| Operating Temperature | Please confirm before ordering |
| Model Number | MCX631102AS-ADAT |
Note: This SKU includes hardware root‑of‑trust (RoT) for secure boot. For crypto (IPsec) variants, please contact our sales team.
Selection Guide
| Feature | MCX631102AS-ADAT | Other Variants |
|---|---|---|
| Ports | 1× SFP28 (25GbE) | 2× SFP28 (25G) / 1× QSFP28 (50G) |
| PCIe | Gen4 x8 | Gen4 x8 |
| Root‑of‑Trust | Yes (secure boot) | Optional on some SKUs |
| IPsec Crypto | No | Yes (crypto variants available) |
| Form Factor | Low‑profile PCIe | OCP 3.0 SFF also available |
| RoCE | Zero‑Touch RoCE | Zero‑Touch RoCE |
Note: For dual‑port, 50G, OCP 3.0, or crypto variants, please contact our sales team for specific ordering part numbers.
Advantages
- CPU offload: ASAP2 acceleration frees up CPU cores for application workloads
- Simplified RoCE: Zero‑Touch RoCE eliminates complex PFC/ECN configurations
- Supply chain security: Hardware root‑of‑trust protects against firmware tampering and cloning
- Cost‑effective: Best TCO for 25GbE enterprise deployments
- Future‑ready: PCIe Gen4 x8 delivers 16GB/s bandwidth for emerging workloads
- Virtualization optimized: SR‑IOV and VirtIO acceleration enable efficient multi‑tenant clouds
Service & Support
As an authorized NVIDIA partner, Hong Kong Starsurge Group provides:
- Technical pre‑sales consultation for SmartNIC integration and network architecture design
- Global logistics with real‑time tracking and customs clearance support
- Standard NVIDIA hardware warranty coverage
- Firmware and driver compatibility advisory for major OS platforms
- Multilingual support (English, Mandarin, Cantonese) via email or phone
Frequently Asked Questions
Q: What is the maximum bandwidth of this adapter?
A: Up to 25Gb/s (single‑port 25GbE)
Q: Does this card support RoCE?
A: Yes, it features Zero‑Touch RoCE (ZTR) with auto‑configuration for PFC and ECN, simplifying RDMA deployment
Q: What is hardware root‑of‑trust?
A: It is a security feature that ensures only authenticated firmware can boot on the adapter, protecting against supply chain attacks and unauthorized firmware modifications
Q: Is this card compatible with PCIe Gen3 servers?
A: Yes, it is backward compatible with PCIe Gen3 x8 slots
Q: Does this SKU include IPsec crypto acceleration?
A: No, the MCX631102AS‑ADAT includes root‑of‑trust but not IPsec crypto. Crypto‑enabled SKUs are available - please contact our sales team
Q: What is ASAP2?
A: ASAP2 (Accelerated Switch and Packet Processing) offloads SDN data‑plane processing to the SmartNIC, accelerating VXLAN, GENEVE, and NVGRE encapsulations
Handling Precautions
- Observe standard ESD precautions during installation and handling
- Ensure the system is powered off before inserting or removing the adapter
- Use appropriate anti‑static wrist straps and grounded workstations
- Do not touch the edge connector or exposed components
- Follow system vendor guidelines for PCIe slot power and cooling requirements
About Hong Kong Starsurge Group
Hong Kong Starsurge Group Co., Limited is a technology‑driven provider of network hardware, IT services, and system integration solutions. Since 2008, we have served customers worldwide with networking equipment including switches, NICs, wireless access points, controllers, cables, and optical modules. Our experienced sales and technical teams support diverse industries such as government, healthcare, manufacturing, education, finance, and enterprise. We deliver customized solutions, global logistics, and multilingual support - all built on a customer‑first commitment to reliability, performance, and scalability.
Key Facts
Part number: MCX631102AS-ADAT
Chipset: ConnectX‑6 Lx
Ports: 1× SFP28 (25GbE)
Host: PCIe Gen4 x8 (16GB/s)
Message rate: 75 Mpps
Root‑of‑Trust: Yes (secure boot)
RoCE: Zero‑Touch RoCE
Form factor: Low‑profile PCIe
Compatibility Matrix
| Category | Supported Platforms |
|---|---|
| Operating Systems | Linux (RHEL, Ubuntu, SLES), Windows Server, VMware ESXi |
| Switches | NVIDIA Spectrum SN2000/SN3000/SN4000 series, third‑party 25G switches |
| Servers | x86 and Arm‑based servers with PCIe Gen3/Gen4 slots |
| Management | NC‑SI, MCTP, PLDM |
Buyer Checklist
- Confirm your server has an available PCIe Gen3 or Gen4 x8 slot
- Verify the required port count (single 25G SFP28)
- Check if your OS and driver stack are supported
- Determine if root‑of‑trust (secure boot) is required for your security policy (included)
- Evaluate power and cooling capacity of your server chassis
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