Nvidia Mellanox ConnectX-6 Lx EN 25GbE Dual Port SFP28 PCIe 4.0 x8 Network Interface Card (NIC) MCX631102AS-ADAT
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- Specifications
- Description
| Manufacturer Part Number | MCX631102AS-ADAT |
| Manufacturer | Nvidia Mellanox |
| Condition | Refurbished |
| Standard Warranty | 90 Day Replacement Warranty |
| Item Category | Network Interface Cards (NICs) |
| Model | ConnectX-6 Lx |
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NVIDIA Mellanox ConnectX-6 Lx EN 25GbE Dual-Port SFP28 PCIe 4.0 x8 Network Interface Card (MCX631102AS-ADAT)
Product Overview
The NVIDIA Mellanox ConnectX-6 Lx EN MCX631102AS-ADAT is a high-performance network interface card designed for modern data centers, enterprise servers, and high-speed storage environments. With dual SFP28 ports delivering up to 25GbE per port, this adapter provides an aggregate throughput of 50Gbps, enabling fast, reliable, and low-latency networking.
Key Features
- Dual SFP28 ports supporting 25GbE, 10GbE, and 1GbE speeds
- PCIe 4.0 x8 host interface with backward compatibility
- Advanced RDMA support (RoCE v1 and v2)
- NVMe over Fabrics and storage acceleration support
- Virtualization offloads including SR-IOV, VXLAN, and NVGRE
- Secure Boot and hardware root-of-trust
- Low power consumption and compact form factor
- Crypto disabled (no cryptographic acceleration)
Technical Specifications
General
- Manufacturer: NVIDIA Mellanox
- Model: MCX631102AS-ADAT
- Product Line: ConnectX-6 Lx EN
- Device Type: Network Adapter
- Form Factor: Half-Height, Half-Length (HHHL)
Networking & Connectivity
- Ports: 2 × SFP28
- Data Rate: 25Gbps per port (50Gbps total)
- Supported Speeds: 25GbE, 10GbE, 1GbE
- Network Technology: NRZ
- Cabling: DAC, active copper, optical transceivers
Host Interface
- Bus Type: PCIe 4.0 x8
- Backward Compatibility: PCIe Gen3, Gen2, Gen1
Performance & Offloads
- Protocols: TCP/IP, UDP/IP, iSCSI
- RDMA: RoCE v1, RoCE v2, Zero-Touch RoCE, GPUDirect, DCT
- Storage: NVMe-oF, iSER, NFSoRDMA, SMB Direct
- Virtualization: SR-IOV, VXLAN, NVGRE, ASAP², connection tracking
- Stateless Offloads: Checksum, LSO, LRO, RSS, TSS, VLAN/MPLS
Timing & Synchronization
- IEEE 1588v2 PTP
- Hardware PTP Clock (PHC)
- Line-rate hardware timestamping
Security & Management
- Secure Boot with hardware root-of-trust
- Secure firmware updates
- Crypto Acceleration: Not included
- Remote Boot: PXE, iSCSI, UEFI (x86 and Arm)
- Management Interfaces: NC-SI, MCTP over SMBus/PCIe, PLDM
Power & Environmental
- Power Consumption: ~11.53W (Gen4), ~10.73W (Gen3)
- Voltage: 12V
- Operating Temperature: 0°C to 55°C
- Humidity: 10% to 85% non-condensing
Dimensions
- 3.79 in x 2.71 in (96.3 mm x 68.9 mm)
Standards Compliance
- OCP 3.0
- IEEE 802.3by, 802.3ae, 802.3ap
- IEEE 802.1Q, 802.1p, 802.3ad
- IEEE 802.1Qbb, 802.1Qaz, 802.1Qbg
- IEEE 1588v2
- IEEE 1149.1/6
Compatibility
- Operating Systems: Linux, Windows Server, VMware ESXi
- Hardware: PCIe Gen4 and Gen3 servers
- Networking: Compatible with SFP28-based infrastructure
Important Notes
- This model does not include hardware cryptographic acceleration
- Requires compatible switches and cabling to achieve full 25GbE performance
Ideal Applications
- Data center networking
- Virtualization and cloud infrastructure
- High-performance computing (HPC)
- AI and GPU workloads
- High-speed storage environments
The ConnectX-6 Lx EN delivers reliable, low-latency networking with advanced offloads and scalability, making it a powerful solution for modern enterprise and data center deployments.