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About This Manual

This User Manual describes NVIDIA® ConnectX®-6 Dx Ethernet adapter cards for Open Compute Project (OCP), Spec 2.0. It provides details as to the interfaces of the board, specifications, required software and firmware for operating the board, and relevant documentation.

Legacy (EOL) Ordering Part Numbers

The table below provides the ordering part numbers (OPN) for the available ConnectX-6 Dx Ethernet adapter cards for OCP Spec 2.0.

NVIDIA SKULegacy OPNMarketing Description
900-9X671-0046-SN0    MCX623405AC-CDANConnectX®-6 Dx EN adapter card, 100GbE OCP 2.0, with Host Management, Type 2, Single-port QSFP56, PCIe 4.0 x16, Crypto and Secure Boot, No Bracket

MCX623405AC-VDANConnectX®-6 Dx EN adapter card, 200GbE OCP 2.0, with Host Management, Type 2, Single-port QSFP56, PCIe 4.0 x16, Crypto and Secure Boot, No Bracket
900-9X671-0016-SN0MCX623405AN-CDANConnectX®-6 Dx EN adapter card, 100GbE OCP 2.0, with Host Management, Type 2, Single-port QSFP56, PCIe 4.0 x16, No Crypto, No Bracket
900-9X671-0018-SN0  MCX623405AN-VDANConnectX®-6 Dx EN adapter card, 200GbE OCP 2.0, with Host Management, Type 2, Single-port QSFP56, PCIe 4.0 x16, No Crypto, No Bracket

Intended Audience

This manual is intended for the installer and user of these cards. The manual assumes basic familiarity with Ethernet network and architecture specifications.

Technical Support

Customers who purchased NVIDIA products directly from NVIDIA are invited to contact us through the following methods:

Customers who purchased NVIDIA Global Support Services, please see your contract for details regarding Technical Support.
Customers who purchased NVIDIA products through an NVIDIA-approved reseller should first seek assistance through their reseller.

Related Documentation

MLNX_OFED for Linux User Manual and Release NotesUser Manual describing OFED features, performance, band diagnostic, tools content and configuration. See MLNX_OFED for Linux Documentation.
WinOF-2 for Windows User Manual and Release NotesUser Manual describing WinOF-2 features, performance, Ethernet diagnostic, tools content and configuration. See WinOF-2 for Windows Documentation.
NVIDIA VMware for Ethernet User ManualUser Manual and release notes describing the various components of the NVIDIA ConnectX® NATIVE ESXi stack. See VMware® ESXi Drivers Documentation.
NVIDIA Firmware Utility (mlxup) User Manual and Release NotesNVIDIA firmware update and query utility used to update the firmware. Refer to Firmware Utility (mlxup) Documentation.
NVIDIA Firmware Tools (MFT) User Manual

User Manual describing the set of MFT firmware management tools for a single node. See MFT User Manual.

IEEE Std 802.3 SpecificationIEEE Ethernet Specifications 
PCI Express SpecificationsIndustry Standard PCI Express Base and Card Electromechanical Specifications. Refer to PCI-SIG Specifications. 
Open Compute Project 2.0 SpecificationOpen Compute Project (OCP)
LinkX Interconnect Solutions

LinkX cables and transceivers are designed to maximize the performance of High-Performance Computing networks, requiring high-bandwidth, low-latency connections between compute nodes and switch nodes. NVIDIA offers one of the industry’s most complete line of 10, 25, 40, 50, 100, 200, and 400GbE  in Ethernet and EDR, HDR, and NDR, including Direct Attach Copper cables (DACs), copper splitter cables, Active Optical Cables (AOCs) and transceivers in a wide range of lengths from 0.5m to 10km. In addition to meeting Ethernet and IBTA standards, NVIDIA tests every product in an end-to-end environment ensuring a Bit Error Rate of less than 1E-15Read more at LinkX Cables and Transceivers.

NVIDIA ConnectX-7 Electrical and Thermal SpecificationsElectrical and Thermal specifications are provided in the "NVIDIA ConnectX-7 Adapter Cards Electrical and Thermal Specifications" document available at NVOnline following login.

Document Conventions

When discussing memory sizes, MB and MBytes are used in this document to mean size in MegaBytes. The use of Mb or Mbits (small b) indicates size in mega bits. In this document PCIe is used to mean PCI Express.