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MCX345A-BCQN_OCP2.0

NVIDIA Mellanox ConnectX-3 Pro EN MCX345A-BCQN OCP2.0

PCIe 3.0 x8 Single-Port 40G QSFP+ OCP 2.0 Ethernet Adapter (with NC-SI/IPMI Out-of-Band Management)

P/N: MCX345A-BCQN OCP2.0

Host Interface

PCIe 3.0 x8

Number of Ports

1-port

Port Type

QSFP+

Network Speed

40 Gb/s

RDMA Support

RoCE v1

Regulatory Certifications

Product Description

The NVIDIA Mellanox ConnectX-3 Pro EN MCX345A-BCQN OCP2.0 is a single-port 40G QSFP+ Ethernet adapter built to the OCP 2.0 form factor, delivering high-performance networking over a PCIe 3.0 x8 interface. Building on the MCX345A-BCPN, this variant adds NC-SI (Network Controller Sideband Interface) and IPMI (Intelligent Platform Management Interface) out-of-band management, allowing administrators to remotely monitor and manage the adapter through the server's BMC (Baseboard Management Controller) even when the host OS is down or unresponsive — ideal for data centers and cloud environments that require rigorous remote operations capability. Combined with hardware-offloaded RDMA over Converged Ethernet (RoCE v1) and UEFI boot support, it balances performance with manageability, making it the preferred choice for OCP-based servers that require out-of-band management.

Key Features

  • OCP 2.0 standard form factor for hyperscale data center servers

  • Single-port 40Gb/s QSFP+ Ethernet connectivity

  • PCIe 3.0 x8 host interface for ample bandwidth

  • NC-SI out-of-band management interface with seamless BMC integration

  • IPMI (Intelligent Platform Management Interface) support

  • RDMA over Converged Ethernet (RoCE v1) support

  • Hardware offload for TCP/IP, UDP, and iSCSI checksum calculations

  • UEFI boot support, compatible with modern server firmware architecture

  • SR-IOV support for network virtualization and multi-tenant isolation

  • Low latency and low CPU overhead, ideal for cloud and virtualized platforms