NVIDIA MCX621102AN-ACAT ConnectX-6 Lx EN Adapter

Brand: NVIDIA | Category: Network Adapters & NICs

SKU: NVIDIAMCX621102ANACATCONNECTX6ADAPT | Part #: MCX621102AN-ACAT | MPN: MCX621102AN-ACAT

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NVIDIA's MCX621102AN-ACAT ConnectX-6 Lx adapter represents the practical choice for organisations building or scaling infrastructure where network offload capabilities directly impact workload performance and operating costs. This dual-port 100GbE NIC is engineered around a principle that distinguishes enterprise-grade adapters from commodity network cards: the CPU should not carry the burden of protocol processing, memory operations, or packet manipulation. Network architects and infrastructure teams across the GCC and Asia-Pacific region deploy the MCX621102AN-ACAT when latency-sensitive applications, storage protocols, or machine learning training pipelines require guaranteed, deterministic network behaviour without consuming core compute cycles.

The defining strength of the NVIDIA ConnectX-6 Lx lies in its offload engine, which implements Remote Direct Memory Access (RDMA) over Converged Ethernet via RoCE v2, hardware-accelerated checksum and CRC calculation, Receive-Side Scaling (RSS), and built-in memory for buffer management. When a data centre architect specifies the MCX621102AN-ACAT for a cluster of GPU nodes or a high-performance NVMe over Fabrics (NVMe-oF) storage fabric, they are purchasing the ability to move data between systems without taxing the host CPU. This is not a marginal optimisation. In AI labs running distributed training across dozens of nodes, or in enterprises deploying converged storage and compute infrastructure, the difference between CPU-based network stack processing and NVIDIA hardware offload translates directly into throughput, latency percentiles, and power consumption. The MCX621102AN-ACAT's 75-watt power envelope reflects efficient silicon design: you get dual 100Gbps ports without the thermal and electrical overhead of older generation adapters.

Physically, the card is a full-height, half-length PCIe 4.0 device, designed for insertion into standard server slots without requiring custom riser cards or mechanical modifications. The NVIDIA MCX621102AN-ACAT connects via QSFP28 optics, aligning with modern data-centre cabling standards and allowing organisations to leverage existing transceiver investments or standardised optical components. PCIe 4.0 native support ensures the adapter saturates its 100Gbps per-port bandwidth without bottlenecking on the host bus. Network engineers responsible for fabric design will appreciate that both ports deliver symmetric, line-rate performance, eliminating the asymmetry seen in earlier-generation adapters or lower-tier NICs. The RoCE v2 and NVMe-oF support is not merely listed in a datasheet—it is actively embedded in silicon, meaning protocol processing happens on the card itself, not in kernel drivers or user-space libraries competing for CPU attention.

NVIDIA has positioned the ConnectX-6 Lx for environments where cost-per-port must remain rational but offload capability is non-negotiable. Storage architects selecting fabric adapters for all-flash arrays or hyperscale object storage clusters frequently specify the MCX621102AN-ACAT because its hardware implementation of Ethernet, RoCE v2, and NVMe over Fabrics protocols eliminates the throughput loss and latency variance common in software-only stacks. Similarly, AI infrastructure teams building clusters for training or inference select dual-port NVIDIA adapters when bandwidth density, determinism, and power efficiency are jointly required. Systems administrators and network operators in enterprises across the Middle East, Asia, and Europe have integrated the MCX621102AN-ACAT into production deployments spanning converged infrastructure, hyperconverged systems, and dedicated high-performance compute clusters. The consistent result: visible reduction in CPU utilisation per gigabit transferred, stable 99th-percentile latencies, and simplified operational overhead because offload features reduce the attack surface for network-related performance issues.

Omnixon Global maintains in-stock inventory of the NVIDIA MCX621102AN-ACAT and related ConnectX-6 series adapters, serving data-centre operations, AI labs, and enterprise IT procurement teams across the UAE, GCC, and pan-Asian markets. Our technical team can advise on optics compatibility, PCIe slot configuration, and fabric integration planning to ensure the MCX621102AN-ACAT delivers its rated performance in your specific infrastructure. We welcome detailed technical inquiries and RFQ submissions for single units, volume orders, or mixed hardware packages; contact our sales engineering team for availability, lead times, and regional logistics details.

Performance Specifications & Offload Capabilities

• Dual 100GbE QSFP28 ports delivering up to 100Gbps per port with symmetric, non-blocking throughput
• RoCE v2 (RDMA over Converged Ethernet v2) hardware offload for low-latency memory operations in clustering and storage applications
• NVMe over Fabrics support with protocol acceleration, enabling efficient block storage access over Ethernet without CPU intervention
• Hardware-accelerated receive-side scaling (RSS), checksum offload, and CRC calculation to reduce kernel network stack overhead
• PCIe 4.0 interface with full-height, half-length form factor; 75-watt maximum power consumption for efficient thermal management
• Integrated on-board memory for buffer management and offload operations, eliminating contention with host DRAM
• Compatible with x16 or x8 PCIe slots on supported enterprise servers; no custom mechanical or electrical modifications required