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Hong Kong Starsurge Group Co., Limited
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NVIDIA ConnectX-6 Lx MCX631102AN-ADAT 25/50GbE Ethernet SmartNIC with RoCE & ASAP2

NVIDIA ConnectX-6 Lx MCX631102AN-ADAT 25/50GbE Ethernet SmartNIC with RoCE & ASAP2

Payment Terms T/T
Products Status Stock
Interface PCIe 4.0 x8
Delivery Time Based on inventory
Network Interface Two SerDes lanes supporting 25Gb/s per lane, for various port configurations: -2x 10/25 GbE -1x 50GbE
Connectors 2 x SFP28
Model Number MCX631102AN-ADAT
Brand Name Mellanox
Condition new and original
Supply Ability Supply by project/batch
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
Packaging Details outer box
Technology Ethernet
Speed 25Gbps
Minimum Order Quantity 1pcs
Price Negotiate
Detailed Product Description
NVIDIA ConnectX-6 Lx MCX631102AN-ADAT 25/50GbE Ethernet SmartNIC
Enterprise SmartNIC | Ready for shipment
25/50GbE dual-port * PCIe Gen4 x8 * ASAP2 SDN offload * Zero-Touch RoCE
Designed for cloud, enterprise, and AI-driven data centers, the NVIDIA ConnectX-6 Lx SmartNIC delivers line-rate 25/50GbE performance with advanced RDMA (RoCE), programmable SDN acceleration, and hardware offloads.
Product Overview
Built on NVIDIA's industry-leading ConnectX architecture, the ConnectX-6 Lx family brings smart acceleration to mainstream 25GbE deployments. The MCX631102AN-ADAT supports up to two ports of 10/25GbE or a single 50GbE port, with total bandwidth up to 50Gb/s.
Featuring PCIe Gen4 x8 host interface (backward compatible with Gen3), it offloads overlay tunnels (VXLAN, GENEVE, NVGRE), connection tracking, and SDN data plane processing. This results in lower TCO, superior scalability, and seamless integration into existing Ethernet fabrics.
With Zero-Touch RoCE (ZTR), the adapter eliminates complex Priority Flow Control (PFC) or ECN configuration, making RDMA deployment effortless across standard networks. Ideal for NVMe-oF, distributed storage, HPC, and latency-sensitive workloads.
Key Features
  • Line-rate 75Mpps: Full wire-speed message rate
  • Advanced RoCE & ZTR: Zero-Touch RoCE, resilient and scalable
  • ASAP2 SDN Acceleration: Offloads VXLAN, GENEVE, NVGRE, MPLS, GTP
  • Hardware Root-of-Trust: Secure boot, anti-cloning protection
  • SR-IOV & VirtIO offload: Maximizes VM/container performance
  • Overlay & tunnel offload: Stateless offloads for VXLAN/NVGRE
Technology - Smart Acceleration Inside
ASAP2 Acceleration
ASAP2 (Accelerated Switch and Packet Processing) offloads the SDN data plane directly to the SmartNIC, accelerating Open vSwitch performance and freeing host CPU cores for business applications. Supports stateful connection tracking (L4 firewall), header rewrite, flow mirroring, sampling, and hierarchical QoS.
Zero-Touch RoCE (ZTR)
Simplifies RDMA deployments by eliminating the need for fine-tuning PFC or ECN on existing network switches. RoCE payloads run seamlessly over standard Ethernet infrastructure, dramatically reducing operational complexity for storage and AI clusters.
Security and Supply Chain Protection
The adapter includes hardware root-of-trust for secure boot and firmware updates, using RSA cryptography and device-unique keys to guarantee authenticity and prevent cloning.
Typical Deployments
  • Cloud & Virtualized Data Centers: Increase VM density with SR-IOV, VirtIO acceleration, and ASAP2 offloads
  • AI & Machine Learning Clusters: High-throughput, low-latency RoCE for GPU direct storage access
  • Edge Computing & NFV: Accelerate VNF performance, GTP encapsulation for 5G, and IPsec for secure edge links
  • Hyperconverged Infrastructure (HCI): Deploy Ceph, vSAN, or Azure Stack HCI with efficient RDMA
  • Enterprise & Financial Services: Low-latency trading platforms, database acceleration, and secure multi-tenancy
Technical Specifications
CategorySpecification (MCX631102AN-ADAT)
Product ModelMCX631102AN-ADAT
Ports & Speed2x 10/25GbE or 1x 50GbE; total aggregate bandwidth 50Gb/s
Connector TypeSFP28 (for 25GbE) / QSFP28 for single 50GbE port operation
Host InterfacePCIe Gen 4.0 (compatible with Gen3) x8 lanes
Form FactorStandard PCIe low-profile (bracket included)
Message Rate75 million packets per second (Mpps)
RoCE SupportZero-Touch RoCE, RoCE congestion control, DCQCN
Security OffloadConnection tracking (L4 firewall), hardware root-of-trust
Overlay OffloadVXLAN, GENEVE, NVGRE, MPLS, GTP, NSH
VirtualizationSR-IOV (up to 1K virtual functions), VirtIO-net offload
Operating Temperature0°C to 55°C with proper airflow
Why Choose ConnectX-6 Lx MCX631102AN-ADAT
  • Optimized TCO for 25GbE: Consolidates networking and SDN acceleration into a single adapter
  • Future-proof capacity: Scales from 10/25GbE to 50GbE without hardware replacement
  • Operational simplicity: Zero-Touch RoCE minimizes network engineering overhead
  • Secure by design: Hardware root-of-trust ensures firmware authenticity
  • Ecosystem ready: Full support from NVIDIA DOCA and mainstream platforms
Frequently Asked Questions
Q: Is MCX631102AN-ADAT compatible with PCIe Gen3 servers?
A: Yes, it auto-negotiates to PCIe Gen3 x8, delivering full 25GbE line rate.
Q: Does this model support IPsec encryption offload?
A: No, MCX631102AN-ADAT is a non-crypto variant; for inline IPsec acceleration please select Crypto SKUs.
Q: Can this adapter be used for both storage (NVMe-oF) and TCP networking simultaneously?
A: Absolutely, using SR-IOV or VirtIO you can partition the adapter for converged workloads.
Key Facts at a Glance
25/50GbE 75Mpps PCIe 4.0 x8 RoCE ZTR ASAP2 Hardware RoT
About Starsurge
Founded in 2008, Starsurge is a technology-driven provider of network hardware, IT services, and system integration solutions. As an authorized partner of leading brands including NVIDIA, we deliver genuine SmartNICs with global logistics and deep technical expertise.
Product Tags: NVIDIA ConnectX-6 Lx 25/50GbE SmartNIC   Ethernet SmartNIC with RoCE   Nvidia Network Card with ASAP2  
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