NVIDIA Mellanox MCX341A-XCCN ConnectX-3 EN 10GbE Single-Port SFP+ OCP Mezzanine Adapter, Lot of 5: This is a single-port 10 Gigabit Ethernet network interface card in OCP (Open Compute Project) Mezzanine 2.0 form factor, based on the Mellanox ConnectX-3 EN ASIC. MPN MCX341A-XCCN. This is NOT a standard PCIe card, NOT a dual-port adapter, NOT InfiniBand-capable, and NOT a 25/40/100GbE adapter. Sold as a Lot of 5, refurbished and tested.
Engineering Context: ConnectX-3 EN delivers 10GbE wire-speed throughput on a single SFP+ port with PCIe Gen3 x8 host signaling carried over the OCP Mezzanine connector. Hardware offloads include stateless TCP/UDP/IP checksum, Large Send Offload, Large Receive Offload, and VLAN tagging. RDMA over Converged Ethernet (RoCE) is supported for low-latency RDMA storage and HPC traffic. The OCP form factor mounts directly to compatible Open Compute servers without consuming a standard PCIe slot, and ships without a PCIe bracket.
Deployment & Use Cases: Open Compute hyperscale data center servers, OCP-compliant cloud infrastructure deployments, OCP rack designs, and 10GbE server uplinks where standard PCIe slots must remain free for accelerators or storage controllers.
Technical Specifications:
- MPN: MCX341A-XCCN
- Controller: Mellanox ConnectX-3 EN
- Ports: 1x SFP+
- Speed: 10 Gigabit Ethernet
- Host Interface: PCI Express 3.0 x8 (over OCP Mezzanine)
- Form Factor: OCP Mezzanine 2.0
- Bracket: None (OCP mezzanine, not PCIe)
- Protocol Support: 10GbE, RoCE
- Stateless Offloads: TCP/UDP/IP checksum, LSO, LRO, VLAN tagging
- Virtualization: SR-IOV
- Pack Quantity: Lot of 5
- Condition: Refurbished, tested
- Brand: NVIDIA Mellanox
Compatibility & Constraints: Supported on Linux (in-kernel mlx4_en driver), VMware ESXi, Microsoft Windows Server with vendor drivers. Requires an OCP Mezzanine 2.0 slot — does NOT fit standard PCIe slots. NOT an InfiniBand VPI adapter; it is Ethernet-only (EN). NOT compatible with 25GbE / 40GbE / 100GbE links. Accepts standard SFP+ DAC cables and SR / LR optical modules at 10GbE.
Why TES: T.E.S IT-SOLUTIONS specializes in refurbished NVIDIA Mellanox enterprise networking hardware. Each MCX341A-XCCN card is bench-tested before shipment. Handling time 1–3 business days. Request a quote.