HP ZGX 0.4m QSFP112 Ethernet DAC Cable for ZGX Nano GB10 - C20MQAA

Name: HP ZGX 0.4m QSFP112 Ethernet DAC Cable for ZGX Nano GB10 - C20MQAA
Brand: HP
SKU: C20MQAA
Price: 335.8 SGD
Availability: InStock

SKU: C20MQAA Brand: HP

Prices in SGD, excluding 9% GST.

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Authorised resellerGenuine stock with full manufacturer warranty.

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PRODUCT DESCRIPTION

HP ZGX 0.4m QSFP112 Ethernet DAC Cable, 400G QSFP112 to QSFP112 Direct Attach Copper, 30 AWG, for Linking Two HP ZGX Nano G1n NVIDIA GB10 AI Stations over ConnectX-7 200GbE (C20MQAA) - Local Warranty

HP ZGX 0.4m QSFP112 Ethernet DAC Cable — HP's Cluster Cable for Two ZGX Nano AI Stations

The HP ZGX 0.4m QSFP112 Ethernet DAC Cable (option kit C20MQAA) is the HP-branded direct-attach copper cable that links two HP ZGX Nano G1n AI Stations back-to-back through their NVIDIA ConnectX-7 QSFP ports. HP's ZGX Nano QuickSpecs list it as a 400 mm QSFP112 400G DAC cable in 30 AWG copper, and it is the accessory HP names for the ZGX Nano's documented two-unit cluster: two GB10 systems working as one on AI models of up to 405 billion parameters. SourceIT, an authorised IT reseller in Singapore, stocks the cable alongside the HP ZGX Nano G1n AI Station 4TB (DD8J0PA) so a two-node desk cluster can be ordered and invoiced in one go.

What It Links — Two NVIDIA GB10 Systems over ConnectX-7

Every HP ZGX Nano carries an NVIDIA ConnectX-7 200 GbE controller with two QSFP112 ports at 200 Gbps signalling per port. A single DAC cable between one QSFP port on each unit creates the direct 200 GbE link that NVIDIA's "Connect Two Sparks" playbook uses for inter-node communication, pooling the two units' 128 GB memories so models too large for one GB10 system — up to 405 billion parameters — can be served across both. No switch, transceiver or fibre is needed for the two-node case; NVIDIA specifies one QSFP112 DAC, 400 GbE, Ethernet-mode cable per link and notes that a second cable between the same two devices does not improve performance.

0.4 m Length, QSFP112 400G Class, Direct-Attach Copper

At 400 mm the cable is sized for two ZGX Nano units sitting side by side or stacked on the same desk, the short copper run that direct-attach QSFP112 cabling is designed for. QSFP112 is the 112 Gbps-per-lane form factor used for 400 GbE; the ZGX Nano's ConnectX-7 drives each port at 200 Gbps, so the cable runs well within its rated class.

Compatibility with Other NVIDIA GB10 Systems

C20MQAA is designed for HP ZGX. QSFP112 DAC cables are electrically standard, and NVIDIA's DGX Spark cluster documentation accepts any supported QSFP112 400 GbE DAC for the ConnectX-7 link, but HP publishes compatibility only for the ZGX Nano — so confirm with SourceIT before ordering it for a DGX Spark, ASUS Ascent GX10, Dell Pro Max with GB10, Lenovo ThinkStation PGX, GIGABYTE AI TOP ATOM, MSI EdgeXpert, Acer Altos BrainSphere or xFusion FusionXpark pair. For the HP ZGX Fury G1n, whose ConnectX-8 ports run at 400 Gb/s each, SourceIT quotes matching cabling with the system.

Available in Singapore Through SourceIT

SourceIT supplies the HP ZGX 0.4m QSFP112 Ethernet DAC Cable with a full GST invoice and local warranty, and can bundle it with two ZGX Nano units and the rest of the NVIDIA DGX Spark & DGX Station collection. See the NVIDIA DGX Spark Setup and Enterprise Deployment Guide for two-node configuration.

HP ZGX 0.4m QSFP112 Ethernet DAC Cable Datasheet — Technical Specifications

General

Product Name	HP ZGX 0.4m QSFP112 Ethernet DAC Cable
Part Number	C20MQAA (HP option kit)
Category	Direct-attach copper (DAC) network cable / AI cluster interconnect
Designed For	HP ZGX Nano G1n AI Station (NVIDIA GB10, ConnectX-7)
Local Warranty (Singapore)	Local warranty; supplied by SourceIT with a GST invoice

Cable & Connectors

Connector Type	QSFP112 to QSFP112
Cable Class	QSFP112 400G DAC (direct-attach copper), per HP ZGX Nano QuickSpecs
Length	0.4 m (400 mm)
Wire Gauge	30 AWG, per HP ZGX Nano QuickSpecs
Active / Passive	Not published by HP

Link & Compatibility

Host Interface	NVIDIA ConnectX-7 200 GbE, 2 × QSFP112 ports at 200 Gbps signalling (HP ZGX Nano G1n)
Link Speed in Use	200 GbE direct connection between two ZGX Nano units
Cluster Result	Two linked GB10 units for AI models up to 405 billion parameters, per HP
Cables per Link	One; a second cable between the same two devices does not add performance, per NVIDIA
Other GB10 Systems	Designed for HP ZGX; QSFP112 DAC cables are electrically standard but confirm with SourceIT for other GB10 systems

Compatibility & Software Support

HP ZGX Nano G1n Two-Unit Cluster

HP lists C20MQAA as the option kit for the ZGX Nano's QSFP ports and documents the two-unit configuration for models up to 405 billion parameters. Connect one QSFP port on each unit, then follow NVIDIA's "Connect Two Sparks" playbook on DGX OS 7: assign addresses to the ConnectX-7 interfaces with netplan, set up passwordless SSH between the nodes and validate the link.

Other NVIDIA GB10 Systems

The ConnectX-7 QSFP112 link is shared by the NVIDIA DGX Spark and every OEM GB10 system. C20MQAA is designed for HP ZGX; QSFP112 DAC cables are electrically standard but confirm with SourceIT for other GB10 systems. NVIDIA sells the NVIDIA QSFP112 400G DAC 40 cm (X0101G00400A) and ASUS the ASUS QSFP cable for Ascent GX10 (ASU-90MA0000-P01000); SourceIT stocks all three.

Larger Clusters

NVIDIA's guidance is that three GB10 systems can be cabled directly in a ring (three cables) and four systems require a 400 GbE switch with one cable per device; direct and switched links must not be mixed. A 0.4 m DAC suits back-to-back desk clusters; switched deployments usually need longer cables, which SourceIT can quote.

Package Contents & Ordering Information

What Ships in the Box

1 × HP ZGX 0.4m QSFP112 Ethernet DAC Cable (C20MQAA), QSFP112 to QSFP112

One cable links two units; larger topologies need one cable per device plus a 400 GbE switch.

Systems This Cable Is Sold With

HP ZGX Nano G1n AI Station 4TB (DD8J0PA) — NVIDIA GB10, 128 GB unified memory, 4 TB SED NVMe, 3-year onsite local warranty
HP ZGX Fury G1n (NVIDIA DGX Station GB300) — ConnectX-8 QSFP112 cabling quoted with the system

Other NVIDIA GB10 and DGX Station Systems at SourceIT

NVIDIA DGX Spark 4TB — pair with the NVIDIA QSFP112 400G DAC (X0101G00400A)
ASUS Ascent GX10 4TB — pair with the ASUS QSFP cable (ASU-90MA0000-P01000)
Dell Pro Max with GB10, Lenovo ThinkStation PGX, GIGABYTE AI TOP ATOM, MSI EdgeXpert, Acer Altos BrainSphere GB10 F1, xFusion FusionXpark GB10

Browse the NVIDIA DGX Spark & DGX Station collection. For bundle pricing, GST invoicing and lead times, email sales@sourceit.com.sg quoting C20MQAA.

Datasheet, Downloads & Setup Guide

Official HP and NVIDIA documentation for this cable and the two-unit cluster:

Frequently Asked Questions — HP ZGX 0.4m QSFP112 Ethernet DAC Cable

What is the HP ZGX 0.4m QSFP112 Ethernet DAC Cable?

HP option kit C20MQAA: a 400 mm QSFP112-to-QSFP112 direct-attach copper cable, 30 AWG, listed in HP's ZGX Nano QuickSpecs as the cable for the ZGX Nano's ConnectX-7 QSFP ports.

What does it connect?

Two HP ZGX Nano G1n AI Stations, QSFP port to QSFP port, over the ConnectX-7 200 GbE link. The pair then works as one system on AI models of up to 405 billion parameters.

Do I need one or two cables for two ZGX Nano units?

One. NVIDIA states that a second cable between the same two devices does not improve performance.

Will it work with the NVIDIA DGX Spark, ASUS Ascent GX10 or other GB10 systems?

C20MQAA is designed for HP ZGX; QSFP112 DAC cables are electrically standard but confirm with SourceIT for other GB10 systems. NVIDIA and ASUS also sell their own 40 cm QSFP112 cables, which SourceIT stocks.

Is 0.4 m long enough?

For two units side by side or stacked on one desk, yes. For a switched cluster, ask SourceIT about longer cables.

Can I connect three or four units with this cable?

NVIDIA allows three units in a direct ring with three cables; four units need a 400 GbE switch with one cable per device. HP documents only the two-unit ZGX Nano configuration.

What warranty applies in Singapore?

Local warranty, supplied by SourceIT with a GST invoice.

How do I buy it in Singapore?

Order online on this page or email sales@sourceit.com.sg quoting C20MQAA. SourceIT is an authorised IT reseller in Singapore and supplies the cable on its own or bundled with HP ZGX Nano units.