NVIDIA Quantum-2 QM9790

AITI TECH LIMITED · Quantum-2

NVIDIA Quantum-2 QM9790 400G NDR InfiniBand Switch

QM9790 is the externally managed member of the Quantum-2 NDR switch family. Its 1U design suits buyers who already plan to provision and monitor the fabric through an external management system. Request this model explicitly when local switch management is not part of the intended architecture.

64 logical 400G NDR ports over 32 OSFP cages
1U · externally managed InfiniBand fabrics

Why Choose QM9790

Port layout that matches the project

The platform supports RDMA, adaptive routing and congestion control for distributed communication. Up to 128 logical 200G links are available in supported split configurations. Plan management connectivity separately from the server data links.

Select the complete configuration

InfiniBand links require compatible endpoint adapters, transceivers and cable assemblies. The speed printed on a switch is not enough to establish a working link. Give us the planned adapter model, cable reach and data-port map so the requested components can be identified in the quotation.

Technical Specifications

Port speeds and breakout modes depend on compatible cables, optics, endpoints and software. Manufacturer reference power values are not a substitute for the maximum rack power budget. Confirm the exact ordering configuration before purchase.

Applications and Deployment Planning

Managed cluster fabrics

Consider this model when a fabric-level management platform will oversee multiple InfiniBand switches.

Compute and storage interconnects

Record the endpoint adapters, negotiated link rates and cable distances for both compute and storage connections.

Multi-rack HPC expansion

Specify external management and the intended topology as part of the deployment bill of materials.

Buying QM9790 from AITI

At AITI Tech Limited, we welcome enquiries from enterprise buyers, distributors and system integrators. Send your exact model, required quantity and destination, together with the project connection requirements. Ask us to confirm the offered equipment condition, accessories, availability, delivery and service terms in the quotation.

For an existing network, include the current switch model and software requirements. For a new deployment, include the link schedule and rack power or cooling constraints. A clear bill of materials helps identify omissions such as optics, mounting rails, power cords or feature entitlements before an order is placed.

QM9790 Frequently Asked Questions

Does QM9790 include the same local management as QM9700?

No. QM9790 is externally managed and lacks the QM9700 local management CPU and management-port arrangement. Define the external subnet manager and fabric-management scope before deployment.

Is this an Ethernet switch?

No. Its data fabric uses InfiniBand. Ethernet management interfaces, where provided, are for administration and do not turn InfiniBand data ports into Ethernet switching interfaces.

What interfaces does QM9790 provide?

64 logical 400G NDR ports over 32 OSFP cages. These figures describe the listed data-port layout. Supported breakout configurations must be checked separately.

How much rack space does it require?

The listed chassis format is 1U. Check installation clearances, rail requirements, airflow and power provision for the exact configuration before delivery.

Are optics and cables included?

The accessory scope must be confirmed in the quotation. Specify the optical or direct-attach part number, length and quantity, together with any mounting and power accessories required by the site.

Can I reuse my current cabling?

Reuse depends on connector format, speed, optical reach, endpoint support and the selected port mode. Share the current cable and adapter part numbers rather than relying on physical connector appearance alone.

How do I request a quotation for QM9790?

Email require@hkaiti.com with the full part number, quantity and destination. Add the connection schedule and software requirements, and ask for confirmation of availability, equipment condition and service terms.

Request a QM9790 Quotation

Tell us the configuration your project needs. Include the complete ordering part number, quantity, delivery destination and required optics or cables.

Email: require@hkaiti.com | WhatsApp: +86 18126448810

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Specifications reviewed 14 October 2026. Manufacturer product documentation. Product image sourced from manufacturer assets.