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About This Manual

This User Manual describes NVIDIA® ConnectX®-5 and ConnectX®-5 Ex VPI Single and Dual QSFP28 port PCI Express x16 adapter cards. It provides details as to the interfaces of the board, specifications, required software and firmware for operating the board, and relevant documentation.


Ordering Part Numbers

The table below provides the ordering part numbers (OPN) for the available ConnectX-5 VPI adapter cards.

IC in UseOPNMarketing Description
ConnectX®-5MCX555A-ECATConnectX®-5 VPI adapter card, EDR IB (100Gb/s) and 100GbE, single-port QSFP28, PCIe 3.0 x16, tall bracket
MCX556A-ECATConnectX®-5 VPI adapter card, EDR IB (100Gb/s) and 100GbE, dual-port QSFP28, PCIe 3.0 x16, tall bracket
MCX556A-ECUTConnectX®-5 VPI adapter card, EDR IB (100Gb/s) and 100GbE, dual-port QSFP28, PCIe3.0 x16, UEFI enabled, tall bracket
ConnectX®-5 ExMCX556A-EDATConnectX®-5 Ex VPI adapter card, EDR IB (100Gb/s) and 100GbE, dual-port QSFP28, PCIe 4.0 x16, tall bracket


Intended Audience

This manual is intended for the installer and user of these cards. The manual assumes basic familiarity with InfiniBand and 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 M-1 Global Support Services, please see your contract for details regarding Technical Support.
Customers who purchased NVIDIA products through a NVIDIA approved reseller should first seek assistance through their reseller.


Related Documentation

NVIDIA OFED for Linux User ManualUser Manual describing OFED features, performance, band diagnostic, tools content and configuration.
See http://www.nvidia.com > Products > Software > Ethernet Drivers > NVIDIA OpenFabrics Enterprise Distribution for Linux (MLNX_OFED)
NVIDIA OFED for Linux Release Notes

Release Notes for NVIDIA OFED for Linux driver kit for NVIDIA adapter cards:
See http://www.nvidia.com >Products > Software > InfiniBand/VPI Drivers > Linux SW/Drivers > Release Notes
WinOF-2 NVIDIA OFED for Windows User Manual

User Manual describing WinOF-2 features, performance, Ethernet diagnostic, tools content and configuration.
See http://www.nvidia.com > Products > Software > InfiniBand/VPI Drivers > Windows SW/Drivers
WinOF-2 NVIDIA OFED for Windows Driver Release NotesRelease notes for WinOF-2 driver kit for NVIDIA adapter cards:
See http://www.nvidia.com > Products > Software > InfiniBand/VPI > Windows SW/Drivers
NVIDIA Firmware Utility (mlxup) User Manual and Release NotesNVIDIA firmware update and query utility used to update the firmware.
See http://www.nvidia.com > Products > Software > Firmware Tools > mlxup Firmware Utility
NVIDIA Firmware Tools (MFT) User Manual

User Manual describing the set of MFT firmware management tools for a single node.
See http://www.nvidia.com > Products > Software > Firmware Tools

IEEE Std 802.3 SpecificationIEEE Ethernet specification at http://standards.ieee.org
PCI Express SpecificationsIndustry Standard PCI Express Base and Card Electromechanical Specifications at https://pcisig.com/specifications
NVIDIA LinkX Interconnect Solutions

NVIDIA LinkX InfiniBand 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 industry’s broadest portfolio of QDR/FDR10 (40Gb/s), FDR (56Gb/s), EDR/HDR100 (100Gb/s) and HDR (200Gb/s) cables, 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 IBTA standards, NVIDIA tests every product in an end-to-end environment ensuring a Bit Error Rate of less than 1E-15Read more at https://www.nvidia.com/products/interconnect/infiniband-overview.php


Document Conventions

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