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NVIDIA ConnectX-8 SuperNIC User Manual

Hardware Installation

Installation and initialization of ConnectX-8 SuperNIC require attention to the mechanical attributes, power specification, and precautions for electronic equipment.

Info

Safety warnings are provided here in the English language. For safety warnings in other languages, refer to the SuperNIC Installation Safety Instructions.

Please observe all safety warnings to avoid injury and prevent damage to system components. Note that not all warnings are relevant to all models.

Note that not all warnings are relevant to all models.

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General Installation Instructions

Read all installation instructions before connecting the equipment to the power source.

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Jewelry Removal Warning

Before you install or remove equipment that is connected to power lines, remove jewelry such as bracelets, necklaces, rings, watches, and so on. Metal objects heat up when connected to power and ground and can meltdown, causing serious burns and/or welding the metal object to the terminals.

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Over-temperature

This equipment should not be operated in an area with an ambient temperature exceed­ing the maximum recommended: 55°C (131°F). An airflow of 200LFM at this maximum ambient temperature is required for HCA cards and NICs. To guarantee proper airflow, allow at least 8cm (3 inches) of clearance around the ventila­tion openings.

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During Lightning - Electrical Hazard

During periods of lightning activity, do not work on the equipment or connect or dis­connect cables.

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Copper Cable Connecting/Disconnecting

Some copper cables are heavy and not flexible, as such, they should be carefully attached to or detached from the connectors. Refer to the cable manufacturer for spe­cial warnings and instructions.

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Equipment Installation

This equipment should be installed, replaced, or serviced only by trained and qualified personnel.

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Equipment Disposal

The disposal of this equipment should be in accordance to all national laws and regula­tions.

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Local and National Electrical Codes

This equipment should be installed in compliance with local and national electrical codes.

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Hazardous Radiation Exposure

  • Caution – Use of controls or adjustment or performance of procedures other than those specified herein may result in hazardous radiation exposure.For products with optical ports.

  • CLASS 1 LASER PRODUCT and reference to the most recent laser standards:

    IEC 60 825-1:1993 + A1:1997 + A2:2001 and EN 60825-1:1994+A1:1996+ A2:20

The installation procedure of ConnectX-8 SuperNICs involves the following steps:

Step

Procedure

Direct Link

1

Check the system’s requirements.

System Requirements

2

Follow the safety precautions

Safety Precautions

3

Unpack the package

Unpack the package

5

Follow the pre-installation checklist

Pre-Installation Checklist

6

(Optional) Replace the full-height mounting bracket with the supplied short bracket

Bracket Replacement Instructions

7

Install the ConnectX-8 PCIe x16 SuperNIC in the chassis

ConnectX-8 PCIe x16 Installation Instructions

(Optional) Install the ConnectX-8 Extension Option (2x PCIe x16) in the chassis

ConnectX-8 Extension Option (2x PCIe x16) Installation Instructions

8

Connect cables or modules to the cards

Cables and Modules

9

Identify the SuperNIC in the system

Identifying Your SuperNIC

To successfully integrate the ConnectX-8 SuperNIC into a chassis, ensure that the following system requirements are met:

Warning

Unless otherwise specified, NVIDIA products are designed to work in an environmentally controlled data center with low levels of gaseous and dust (particulate) contamination.

The operating environment should meet severity level G1 as per ISA 71.04 for gaseous contamination and ISO 14644-1 class 8 for cleanliness level.

Hardware Requirements

  • Available PCIe Slot:

    • Ensure the system has an available PCIe Gen6 x16 slot or two PCIe Gen5 x16 slots for optimal performance. The ConnectX-8 SuperNIC requires a full-length PCIe slot for installation.

    • Ensure the chassis is compatible with the form factor of the ConnectX-8 SuperNIC (typically a half-height, full-length card).

  • Power Supply:

    • Ensure the system’s power supply unit (PSU) can provide sufficient power for the ConnectX-8 SuperNIC, typically requiring 75W from the PCIe slot.

  • Connectivity:

    • The ConnectX-8 SuperNIC supports Ethernet and InfiniBand network connections. Ensure the chassis is connected to the appropriate network infrastructure (switches, routers, etc.).

  • MCIO Harness (for dual-board setups):

    • If connecting the PCIe auxiliary extension option in the chassis, ensure the system supports the necessary MCIO harnesses for board interconnects.

Environmental Requirements

ConnectX-8 SuperNICs are offered with two airflow patterns: from the heatsink to the network ports, and vice versa, as shown below.

Please refer to the Specifications section for airflow numbers for each specific SuperNIC model.

The ConnectX-8 SuperNICs are available in two airflow configurations: from the heatsink to the network ports, or from the network ports to the heatsink, as illustrated below.

Airflow from the heatsink to the network ports

Airflow from the network ports to the heatsink

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  • Cooling and Ventilation:

    • Adequate airflow is necessary to keep the ConnectX-8 SuperNIC cool. Ensure the chassis has sufficient cooling mechanisms, including fan trays or directed airflow near the PCIe slots.

      Refer to the Specifications section for the required airflow values.

    • The card may operate at high thermal loads during peak performance; maintaining optimal ambient temperature is crucial to prevent overheating.

  • Chassis Size and Slot Availability:

    • The chassis must have available PCIe slots of sufficient size (half-height/full-length, depending on your configuration) and enough space for MCIO cable routing (if applicable).

Software Requirements

  • Operating System:

    • Ensure the operating system supports the ConnectX-8 SuperNIC, including DOCA Host for Linux and Windows Server

    • versions.

  • Firmware:

    • Ensure that the firmware for the ConnectX-8 SuperNIC is up-to-date. The latest firmware versions may include critical bug fixes, performance improvements, and support for new features.

  • Software:

    • Ensure that the necessary network software and libraries are installed, such as:

      • DOCA-Host for Linux

      • Windows Server drivers for Windows environments

The SuperNIC is being installed in a system that operates with voltages that can be lethal. Before opening the case of the system, observe the following precautions to avoid injury and prevent damage to system components.

Power Down and Disconnect

  • Power Off the System: Ensure the system is powered down completely before beginning the installation process. This includes shutting down the operating system and turning off the power supply.

  • Unplug the Power Cable: Physically disconnect the power cable from the system to prevent any electrical hazards.

Electrostatic Discharge (ESD) Prevention

  • Use an Anti-Static Wrist Strap: Always wear an anti-static wrist strap to prevent electrostatic discharge (ESD) that could damage sensitive components. Attach the wrist strap to a grounded surface.

  • Work on an Anti-Static Mat: If possible, use an anti-static mat to place the SuperNIC and other components on while working. This helps to further reduce the risk of static buildup.

Handle Components with Care

  • Avoid Touching the Connectors: Handle the ConnectX-8 SuperNIC by its edges and avoid touching the connectors or PCB surface to prevent damage from oils, dirt, or static electricity.

  • Use Proper Tools: Use appropriate tools, such as a screwdrivers, to remove any screws or fasteners. Do not force components into place.

Proper Grounding

  • Ensure Proper Grounding: Make sure that the system and all components are properly grounded. This helps to minimize the risk of electrical shock or component damage.

  • Verify Grounding of Work Area: Ensure the area where you are installing the SuperNIC is grounded and free from electrical hazards.

Environmental Safety

    • Work in a Well-Ventilated Area: Ensure that the installation area is well-ventilated and free from excessive dust or humidity.

    • Ensure Clean Hands: Before handling the ConnectX-8 SuperNIC, make sure your hands are clean and free from dirt or oils that could damage the components.

  • Unpack the ConnectX-8 SuperNIC. Check against the package contents list that all the parts have been sent. Check the parts for visible damage that may have occurred during shipping. Please note that the cards must be placed on an antistatic surface. For package contents please refer to Package Contents.

    Warning

    Please note that if the SuperNIC is removed hastily from the antistatic bag, the plastic ziplock may harm the EMI fingers on the networking connector. Carefully remove the SuperNIC from the antistatic bag to avoid damaging the EMI fingers.

  • Shut down your system if active; Turn off the power to the system, and disconnect the power cord. Refer to the system documentation for instructions. Before you install the ConnectX-8 SuperNIC, make sure that the system is disconnected from power.

  • (Optional) Check the mounting bracket on the ConnectX-8 or PCIe Auxiliary Connection Card; If required for your system, replace the full-height mounting bracket that is shipped mounted on the card with the supplied low-profile bracket. Refer to Bracket Replacement Instructions.

The ConnectX-8 SuperNIC and PCIe Auxiliary Connection card are usually shipped with an assembled high-profile bracket. If this form factor is suitable for your requirements, you can skip the remainder of this section and move to Installation Instructions. If you need to replace the high-profile bracket with the short bracket that is included in the shipping box, please follow the instructions in this section.

Warning

During the bracket replacement procedure, do not pull, bend, or damage the EMI fingers cage. It is recommended to limit bracket replacements to three times.

To replace the bracket you will need the following parts:

  • The new brackets of the proper height

  • The 2 screws saved from the removal of the bracket

Removing the Existing Bracket

  1. Using a torque driver, remove the two screws holding the bracket in place.

  2. Separate the bracket from the ConnectX-8 SuperNIC.

    Warning

    Be careful not to put stress on the LEDs on the SuperNIC.

  3. Save the two screws.

Installing the New Bracket

  1. Place the bracket onto the SuperNIC until the screw holes line up.

    Warning

    Do not force the bracket onto the SuperNIC.

  2. Screw on the bracket using the screws saved from the bracket removal procedure above.

    Warning

    Use a torque driver to apply up to 2 lbs-in torque on the screws.

This section provides detailed instructions on how to install your SuperNIC in a system.

Choose the installation instructions according to the ConnectX-8 configuration you would like to use.

Cables and Modules

Networking Cable Installation and Uninstallation

Before connecting a cable to the SuperNIC, ensure that the bracket is fastened to the server chassis using a screw to prevent movement or unplugging of the SuperNIC when the cable is inserted or extracted.

  1. All cables can be inserted or removed with the unit powered on.

  2. To insert a cable, press the connector into the port receptacle until the connector is firmly seated.

    1. Support the weight of the cable before connecting the cable to the SuperNIC. Do this by using a cable holder or tying the cable to the rack.

    2. Determine the correct orientation of the connector to the SuperNIC before inserting the connector. Do not try and insert the connector upside down. This may damage the SuperNIC.

    3. Insert the connector into the SuperNIC. Be careful to insert the connector straight into the cage. Do not apply any torque, up or down, to the connector cage in the SuperNIC.

    4. Make sure that the connector locks in place.

      Note

      When installing cables make sure that the latches engage.

      Warning

      Always install and remove cables by pushing or pulling the cable and connector in a straight line with the SuperNIC.

  3. After inserting a cable into a port, the Green LED indicator will light when the physical connection is established (that is, when the unit is powered on and a cable is plugged into the port with the other end of the connector plugged into a functioning port). See LED Interface under the Interfaces section.

  4. After plugging in a cable, lock the connector using the latching mechanism particular to the cable vendor. When data is being transferred the Green LED will blink. See LED Interface under the Interfaces section.

  5. Care should be taken so as not to impede the air exhaust flow through the ventilation holes. Use cable lengths that allow for routing horizontally around to the side of the chassis before bending upward or downward in the rack.

  6. To remove a cable, disengage the locks and slowly pull the connector away from the port receptacle. The LED indicator will turn off when the cable is unseated.

On Linux

Get the device location on the PCI bus by running lspciand locating lines with the string “Mellanox Technologies”:

ConnectX-8 Card Configuration

Output Example

Single-port Socket Direct Card/MultiHost (2x PCIe x16)

OPN: 900-9X81Q-00CN-ST0

11:00.0 Infiniband controller: Mellanox Technologies CX8 Family [ConnectX-8]

59:00.0 Infiniband controller: Mellanox Technologies CX8 Family [ConnectX-8]

Dual-port Socket Direct Card/MultiHost (2x PCIe x16)

OPN: 900-9X81Q-00CN-ST0

82:00.0 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

82:00.1 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

84:00.0 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

84:00.1 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

In the output example above, the first two rows indicate that one card is installed in a PCI slot with PCI Bus address 05 (hexadecimal), PCI Device number 00, and PCI Function numbers 0 and 1. The other card is installed in a PCI slot with PCI Bus address 82 (hexadecimal), PCI Device number 00, and PCI Function numbers 0 and 1.

Since the two PCIe cards are installed in two PCIe slots, each card gets a unique PCI Bus and Device number. Each of the PCIe x16 busses sees two network ports; in effect, the two physical ports of the ConnectX-7 Socket Direct adapter are viewed as four net devices by the system.

Single-port with x16 PCIe Down Stream Port Extension Option

OPN: 900-9X81E-00EX-DT0

84:00.0 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

Dual-port PCIe x16 Card

OPN: 900-9X81Q-00CN-ST0

82:00.0 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

82:00.1 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

Single-port PCIe x16 Card

OPN: 900-9X81E-00EX-ST0

84:00.0 Ethernet controller: Mellanox Technologies CX8 Family [ConnectX-8]

On Windows

  1. Open Device Manager on the server. Click Start => Run, and then enter devmgmt.msc.

  2. Expand System Devices and locate your ConnectX-8 SuperNIC.

  3. Right-click the mouse on your SuperNIC's row and select Properties to display the SuperNIC properties window.

  4. Click the Details tab and select Hardware IDs (Windows 2022/2019/2016/2012 R2) from the Property pull-down menu.

    PCI Device (Example)

    image2022-2-2_14-45-32-version-1-modificationdate-1733823602213-api-v2.png

  5. In the Value display box, check the fields VEN and DEV (fields are separated by ‘&’). In the display example above, notice the sub-string “PCI\VEN_15B3&DEV_1021”: VEN is equal to 0x15B3 – this is the Vendor ID of Mellanox Technologies, and DEV is equal to 1023 (for ConnectX-8) – this is a valid NVIDIA PCI Device ID.

    Note

    If the PCI device does not have a SuperNIC ID, return to Step 2 to check another device.

    Note

    The list of NVIDIA PCI Device IDs can be found at the PCI ID repository.

© Copyright 2025, NVIDIA. Last updated on Mar 20, 2025.