200G QSFP56 passive DAC cable for NVIDIA DGX Spark and GB10 ConnectX-7 - coiled view

NVIDIA/Mellanox Compatible 200G QSFP56 DAC Cable for DGX Spark, ASUS, MSI, Gigabyte, HP GB10 ConnectX-7 Stacking - 1m / 2m / 3m

Name: NVIDIA/Mellanox Compatible 200G QSFP56 DAC Cable for DGX Spark, ASUS, MSI, Gigabyte, HP GB10 ConnectX-7 Stacking - 1m / 2m / 3m
Brand: Generic
SKU: QSFP56-200G-CU1M
Price: 101.2 SGD
Availability: InStock

SKU: QSFP56-200G-CU1M Brand: Generic

Prices in SGD, excluding 9% GST.

Why buy from SourceIT

Authorised resellerGenuine stock with full manufacturer warranty.

Local supportSingapore-based warranty and technical assistance.

Procurement readyGeBIZ, Vendors@Gov, SAP Ariba, InvoiceNow and PEPPOL.

Bulk & export ordersVolume pricing and international delivery on request.

PRODUCT DESCRIPTION

200G QSFP56 DAC Cable for NVIDIA DGX Spark & GB10 Systems — NVIDIA/Mellanox MCP1650 Compatible, 1 m / 2 m / 3 m

DGX Spark Stacking Cable for ConnectX-7 200GbE

This 200G QSFP56 to QSFP56 passive direct attach copper (DAC) cable carries 200GbE (4 x 50G PAM4) between two NVIDIA ConnectX-7 QSFP ports. Use it as a stacking or cluster cable to connect two NVIDIA DGX Spark class systems directly, with no switch in between, so larger AI models can run across both units.

Connecting two NVIDIA DGX Spark systems with a 200G QSFP56 DAC cable through the ConnectX-7 ports

Works Across NVIDIA GB10 Systems: ASUS, MSI, GIGABYTE, HP, Dell, Lenovo and Acer

The NVIDIA DGX Spark, ASUS Ascent GX10, MSI EdgeXpert, GIGABYTE AI TOP ATOM, HP ZGX Nano, Dell Pro Max with GB10, Lenovo ThinkStation PGX and Acer GB10 systems all share the NVIDIA GB10 Grace Blackwell platform and its ConnectX-7 200GbE networking, so the same QSFP56 DAC cable links any pair of them — brands can be mixed in one cluster.

Choose Your Cable Length: 1 m, 2 m or 3 m

Pick 1 m for units sitting side by side or stacked, 2 m for reach across a desk or between shelves, and 3 m to run between desks or to a 200G Ethernet switch elsewhere in the rack.

Passive Copper Twinax, Near-Zero Power

A passive DAC has no optics and no active electronics, so it draws under 0.1 W, adds no heat to a fanless desktop AI supercomputer, and is plug and play — the port detects the cable when it is inserted. In the data centre it links a 200G switch to a 200G NIC, or switch to switch, at lower cost and power than optical transceivers.

Please note: this is a third-party compatible cable, equivalent to the NVIDIA/Mellanox MCP1650 series. It is not manufactured by NVIDIA. Available from SourceIT in Singapore.

Connection Diagrams — DGX Spark, Switch and NIC

DGX Spark to DGX Spark

One cable between the ConnectX-7 QSFP ports of two units gives a direct 200Gb/s link.

200G Switch to 200G Switch

Links two 200G QSFP56 Ethernet switches, such as the NVIDIA SN3700, over distances of up to 3 m.

200G QSFP56 switch to switch connection with a DAC cable, up to 3 m

200G Switch to 200G NIC

Connects a 200G QSFP56 switch to QSFP56 or QSFP112 network adapters, such as NVIDIA ConnectX-6, ConnectX-7 and BlueField-3.

200G QSFP56 switch to network adapter connection with a DAC cable, up to 3 m

200G QSFP56 DAC Cable — Technical Specifications

Models & Lengths

Model	Length	Wire Gauge	NVIDIA/Mellanox Equivalent
QSFP56-200G-CU1M	1 m (3 ft)	30 AWG	MCP1650-V001E30
QSFP56-200G-CU2M	2 m (7 ft)	26 AWG	MCP1650-V002E26
QSFP56-200G-CU3M	3 m (10 ft)	26 AWG	MCP1650-V003E26

Cable & Electrical

Data Rate	200 Gb/s (4 x 50G PAM4)
Form Factor	QSFP56 to QSFP56
Network Type	200G Ethernet (RoCE)
Cable Type	Passive direct attach copper twinax (DAC)
Jacket Material	PVC
Power Consumption	Under 0.1 W
Minimum Bend Radius	37 to 47 mm, depending on length
Operating Temperature	0 to 70 °C (32 to 158 °F)
Standards	QSFP56 MSA (hot pluggable), IEEE 802.3bj, IEEE 802.3cd, RoHS

Package contents: 1 x 200G QSFP56 passive DAC cable in the length selected.

Compatibility — DGX Spark, GB10 Systems & ConnectX-7

NVIDIA GB10 Desktop AI Systems

NVIDIA	DGX Spark (ConnectX-7, 200GbE QSFP)
ASUS	Ascent GX10
MSI	EdgeXpert
GIGABYTE	AI TOP ATOM
HP	ZGX Nano
Dell	Pro Max with GB10
Lenovo	ThinkStation PGX
Acer	Veriton GN100, Altos BrainSphere GB10 F1

These systems share the NVIDIA GB10 platform with a built-in ConnectX-7 adapter. One cable links two units.

Data Centre Switches & Adapters

Works between 200GbE QSFP56 ports on NVIDIA/Mellanox ConnectX adapters and Spectrum Ethernet switches: switch to switch, or switch to NIC, up to the cable length.

Software

No driver, licence or configuration is needed for the cable itself. On DGX Spark class systems, NVIDIA Sync sets up the ConnectX-7 link between units.

Video — How to Connect Two DGX Sparks (NVIDIA Developer)

Official NVIDIA Developer walkthrough of cabling two DGX Spark systems over their ConnectX-7 ports and configuring the link with NVIDIA Sync.

Frequently Asked Questions — DGX Spark QSFP56 DAC Cable

What cable do I need to connect two NVIDIA DGX Spark units?

One QSFP DAC cable between the ConnectX-7 ports of the two units. Each unit has 200GbE QSFP ports, and a single 200G QSFP56 DAC forms a two-node cluster without a switch.

Does it work with other GB10 systems from ASUS, MSI, GIGABYTE, HP, Dell, Lenovo and Acer?

Yes. The ASUS Ascent GX10, MSI EdgeXpert, GIGABYTE AI TOP ATOM, HP ZGX Nano, Dell Pro Max with GB10, Lenovo ThinkStation PGX and Acer GB10 systems use the same NVIDIA GB10 platform and ConnectX-7 ports as the DGX Spark.

Is this an original NVIDIA cable?

No. It is a third-party compatible cable built to the same QSFP56 standard as the NVIDIA/Mellanox MCP1650 series.

Which length should I choose: 1 m, 2 m or 3 m?

1 m for units placed side by side or stacked, 2 m or 3 m when the systems sit apart or connect to a 200G switch in a rack.

What is the difference between a DAC cable and an optical cable?

A DAC is passive copper with the connectors built in, so it needs no transceivers and almost no power. It is the usual choice for short 200G links of up to 3 m.