OCP mezzanine 10GbE dual-port network adapter — the NVIDIA Mellanox MCX342A-XCAN is a ConnectX-3 EN dual-port 10GbE SFP+ NIC in OCP (Open Compute Platform) mezzanine form factor. MPN: MCX342A-XCAN. This product IS an OCP mezzanine card and is NOT a standard PCIe adapter — it requires an OCP-compatible server motherboard with an OCP mezzanine slot. It is NOT compatible with standard PCIe x8/x16 slots. Condition: refurbished.
Engineering Context
The MCX342A-XCAN connects via an OCP mezzanine connector to the host motherboard, routing PCIe lanes internally without a discrete PCIe slot. Per-port speed is 10GbE; both ports operate simultaneously. The card supports SR-IOV for virtual machine NIC partitioning and hardware-accelerated TCP/IP offloads including large send offload (LSO) and receive-side scaling (RSS). ConnectX-3 EN at 10GbE supports iWARP RDMA in certain OS/driver configurations. The card does not support RoCE v2, which requires ConnectX-4 or later.
Deployment & Use Cases
Deployed in Open Compute Project (OCP) server platforms with OCP 2.0 mezzanine slots, including HP Moonshot, Dell PowerEdge OCP variants, and custom OCP hyperscale server designs. Used in VMware ESXi environments where OCP servers require 10GbE dual-port NIC acceleration via the mezzanine slot. Suitable for Hyper-V deployments on OCP platforms leveraging SR-IOV for virtual NIC assignment. Appropriate for hyperscale web workloads, distributed storage (Ceph, OpenStack Swift), and containerized environments on OCP infrastructure.
Technical Specifications
MPN: MCX342A-XCAN
Series: ConnectX-3 EN
Form Factor: OCP Mezzanine (NOT standard PCIe)
Protocol: Ethernet only
Ports: 2 × SFP+
Speed: 10GbE per port
SR-IOV: Yes
TCP/IP Offload: Hardware-accelerated (LSO, RSS)
RDMA: iWARP (driver-dependent)
Condition: Refurbished
Compatibility & Constraints
Compatible ONLY with servers that provide an OCP mezzanine slot — requires OCP 2.0 mezzanine-standard connector. The MCX342A-XCAN is NOT compatible with standard PCIe x4/x8/x16 slots and cannot be used as a standalone PCIe add-in card. NOT a VPI or InfiniBand card — Ethernet only. SFP+ ports require compatible 10GbE SFP+ optical transceivers or SFP+ DAC cables. Predecessor OCP: ConnectX-2 OCP variants; successor: ConnectX-4 Lx OCP (MCX4421A-XCAN). Verify OCP mezzanine slot pinout version compatibility with the target server platform before ordering.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests all OCP mezzanine adapters for PCIe enumeration, OCP slot link-up, and dual-port 10GbE functionality prior to dispatch. Lab-verified stock, 1–3 business day handling, global shipping. Technical consultation available for OCP platform compatibility. Visit tes-itsolutions.com.