Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter
Brand: Mellanox | Category: Network Adapters & NICs
SKU: MCX623106AC-CDAT | Part #: MCX623106AC-CDAT | MPN: MCX623106AC-CDAT
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About the Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter
For low-latency workloads, NIC offload capabilities free up CPU cycles that would otherwise be consumed by network processing—and the Mellanox ConnectX-6 Dx delivers exactly this benefit at scale. With dual 100 GbE QSFP56 ports and 200 Gb/s aggregate throughput, this adapter (part number MCX623106AC-CDAT) is engineered for data centers and high-performance computing environments where every microsecond and every freed core matters. Mellanox ConnectX-6 Dx combines line-rate Ethernet with inline cryptographic offload, advanced switching, and GPU-direct access, making it ideal for storage architects, network engineers, and AI infrastructure teams operating demanding distributed systems.
The adapter connects via PCIe 4.0 x16 with up to 256 Gb/s bidirectional host bandwidth, ensuring the NIC is never a bottleneck to modern multi-core processors. Mellanox has built in comprehensive offload engines: inline IPsec and TLS 1.2/1.3 for security, VXLAN and GENEVE for overlay networks, and full NVMe over Fabrics (NVMe-oF) initiator and target support for next-generation storage fabrics. RoCE v2 RDMA capabilities, GPU Direct RDMA support, and up to 256 Virtual Functions per port via SR-IOV make this adapter equally at home in converged HPC clusters, AI training farms, or hyperscale cloud backends. At approximately 25 W typical power consumption, thermal footprint remains minimal. The adapter ships in a low-profile form factor with standard bracket, operates reliably across 0 °C to 55 °C, and carries CE, FCC, and RoHS certification for global deployment.
Key Specifications
- Manufacturer: Mellanox (NVIDIA)
- Ports: 2 × QSFP56, 100 GbE per port (200 Gb/s aggregate)
- Host Interface: PCIe 4.0 x16, up to 256 Gb/s bidirectional
- Advanced Offload: Inline IPsec, inline TLS 1.2/1.3, VXLAN, GENEVE, MPLS, NVMe-oF, RoCE v2, GPU Direct RDMA
- Virtualization: SR-IOV up to 256 Virtual Functions per port; ASAP² vSwitch offload
- Operating Systems: Linux (MLNX_OFED), Windows Server, VMware vSphere (ESXi)
For detailed specifications, compatibility verification, and volume pricing, please submit a Request for Quote via Omnix
Technical Specifications
| Brand | Mellanox |
| Category | Network Adapters & NICs |
| SKU | MCX623106AC-CDAT |
| Part Number | MCX623106AC-CDAT |
| Condition | New |
| Form Factor | PCIe Half-Height/Full-Height |
| Interface | PCIe Gen4 |
| Speed | 100GbE |
| Product Line | ConnectX-6 Dx |
| Form Factor | PCIe adapter, low-profile with standard bracket included |
| Number of Ports | 2 |
| Port Type | QSFP56 |
| Ethernet Speed | 100 GbE per port (200 Gb/s aggregate) |
| Host Interface | PCIe 4.0 x16 |
| PCIe Host Bandwidth | Up to 256 Gb/s bidirectional |
| RDMA Protocols | RoCE v2 (RDMA over Converged Ethernet) |
| Storage Protocols | NVMe over Fabrics (NVMe-oF) initiator and target |
| Overlay / Tunneling Offload | VXLAN, GENEVE, MPLS |
| Security Offload | Inline IPsec, inline TLS 1.2/1.3 |
| Virtualization | SR-IOV, up to 256 Virtual Functions per port; ASAP² vSwitch offload |
| GPU Direct RDMA | Supported |
| Operating System Support | Linux (MLNX_OFED), Windows Server, VMware vSphere (ESXi) |
| Power Consumption (typical) | Approximately 25 W |
| Connector | PCIe x16 edge connector |
| Operating Temperature | 0 °C to 55 °C |
| Regulatory Compliance | CE, FCC, RoHS |
Frequently Asked Questions about Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter
What does the Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter do?
The Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter is enterprise networking hardware for data-center, campus, and branch deployments. Common roles include core/distribution switching, server uplinks, top-of-rack fabric, and edge connectivity in mixed Cisco/Juniper/Arista environments.
What are the headline specs of the Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter?
Key specifications for the Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter: new condition; brand Mellanox / NVIDIA; series ConnectX-6 Dx; speed 2x 100GbE; connector 2x QSFP56; host interface PCIe 4.0 x16; rdma RoCE v2. Manufacturer part number MCX623106AC-CDAT. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
Is the Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter compatible with my infrastructure?
The Mellanox ConnectX-6 Dx 100GbE Dual-Port QSFP56 PCIe 4.0 Network Adapter interoperates with standard switching protocols (LACP, MLAG/VPC, 802.1Q, OSPF/BGP). For specific cross-vendor scenarios — Cisco-to-Arista MLAG peering, fabric integration with Cumulus/SONiC, or migration from legacy Catalyst — our network engineers map a compatibility plan as part of the RFQ.