What is the main-port difference between O400-2Q200-C and Q400-2Q200-C in the 400G OSFP & QSFP-DD Breakout DAC category?

O400-2Q200-C uses one 400G OSFP Finned Top main connector, while Q400-2Q200-C uses one 400G QSFP-DD main connector. Both models terminate in two 200G QSFP56 branch connectors.

How is the aggregate 400G bandwidth distributed across the QSFP56 branches on O400-2Q200-C and Q400-2Q200-C?

It is divided evenly into two independent 200G links. The single 400G main-side connection is broken out to two QSFP56 branches, with each branch carrying 200G to a separate compatible port.

Where should the main connector and branch connectors of O400-2Q200-C or Q400-2Q200-C be installed?

Connect the single OSFP Finned Top or QSFP-DD main connector to the 400G switch port. Connect each of the two 200G QSFP56 branches to a separate server, network adapter, node, or other compatible 200G port.

What cable lengths are available for O400-2Q200-C and Q400-2Q200-C in this breakout DAC category?

O400-2Q200-C is available in 1m and 2m lengths. Q400-2Q200-C covers lengths from 1m to 3m, providing an additional option for slightly longer short-distance connections.

Can the 400G OSFP & QSFP-DD Breakout DAC category connect one 400G switch port to two NVIDIA DGX Spark nodes?

Yes. Each cable provides two 200G QSFP56 branches, allowing one branch to connect to each compatible DGX Spark node. DGX Spark includes a ConnectX-7 NIC rated at 200 Gbps, while the 400G switch port must support 2×200G breakout operation.

Do O400-2Q200-C and Q400-2Q200-C use active signal-conditioning components inside the copper data path?

No. Both models are passive direct attach copper cables and do not use active equalization or signal-conditioning electronics in the data path. This passive structure is intended for short-distance connections between compatible high-speed ports.

Are O400-2Q200-C and Q400-2Q200-C hot-pluggable when used with compatible network equipment?

Yes. Both models support hot-pluggable connections with their corresponding OSFP Finned Top or QSFP-DD main ports and QSFP56 branch ports. The 400G host port must also support and be configured for 2×200G breakout operation.

400G OSFP & QSFP-DD Breakout DAC

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400G OSFP Finned Top to 2x 200G QSFP56 Passive Direct Attach Copper Breakout Cable

O400-2Q200-C

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US$90.00
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- 400Gbps to 2x 200Gbps
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400G QSFP-DD to 2x 200G QSFP56 Passive Direct Attach Copper Breakout Cable

Q400-2Q200-C

In Stock Ready to Ship

US$86.00
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400G OSFP & QSFP-DD Breakout DAC Overview

The 400G OSFP & QSFP-DD Breakout DAC category contains two passive copper cable assemblies for short-distance 400G-to-200G connections. Each cable divides one 400G switch-side port into two 200G QSFP56 links, using either an OSFP Finned Top or QSFP-DD main connector. Available in lengths from 1m to 3m, the series supports hot-pluggable connections between 400G switches and multiple network nodes. These cables are used in compact DGX Spark AI clusters, high-performance computing, artificial intelligence, RoCE networks, cloud data centers, and ToR or leaf switching architectures.

O400-2Q200-C is a passive copper breakout cable with one 400G OSFP Finned Top main connector and two 200G QSFP56 branch connectors. The OSFP end carries the aggregate 400G connection from an air-cooled switch, while each QSFP56 branch provides a separate 200G link. Available in 1m and 2m lengths, it supports short-distance connections from a 400G OSFP switch port to two DGX Spark nodes or other compatible QSFP56 network ports in AI, HPC, and RoCE environments.

Q400-2Q200-C connects one 400G QSFP-DD switch port to two 200G QSFP56 ports through a passive copper breakout structure. The main connector carries 400G, which is divided evenly between two QSFP56 branches operating at 200G each. Offered in lengths from 1m to 3m, the hot-pluggable cable supports high-density links between 400G switching platforms and multiple DGX Spark nodes or QSFP56-equipped devices in cloud data centers, AI clusters, and ToR or leaf network architectures.

What is the main-port difference between O400-2Q200-C and Q400-2Q200-C in the 400G OSFP & QSFP-DD Breakout DAC category?: O400-2Q200-C uses one 400G OSFP Finned Top main connector, while Q400-2Q200-C uses one 400G QSFP-DD main connector. Both models terminate in two 200G QSFP56 branch connectors.
How is the aggregate 400G bandwidth distributed across the QSFP56 branches on O400-2Q200-C and Q400-2Q200-C?: It is divided evenly into two independent 200G links. The single 400G main-side connection is broken out to two QSFP56 branches, with each branch carrying 200G to a separate compatible port.
Where should the main connector and branch connectors of O400-2Q200-C or Q400-2Q200-C be installed?: Connect the single OSFP Finned Top or QSFP-DD main connector to the 400G switch port. Connect each of the two 200G QSFP56 branches to a separate server, network adapter, node, or other compatible 200G port.
What cable lengths are available for O400-2Q200-C and Q400-2Q200-C in this breakout DAC category?: O400-2Q200-C is available in 1m and 2m lengths. Q400-2Q200-C covers lengths from 1m to 3m, providing an additional option for slightly longer short-distance connections.
Can the 400G OSFP & QSFP-DD Breakout DAC category connect one 400G switch port to two NVIDIA DGX Spark nodes?: Yes. Each cable provides two 200G QSFP56 branches, allowing one branch to connect to each compatible DGX Spark node. DGX Spark includes a ConnectX-7 NIC rated at 200 Gbps, while the 400G switch port must support 2×200G breakout operation.
Do O400-2Q200-C and Q400-2Q200-C use active signal-conditioning components inside the copper data path?: No. Both models are passive direct attach copper cables and do not use active equalization or signal-conditioning electronics in the data path. This passive structure is intended for short-distance connections between compatible high-speed ports.
Are O400-2Q200-C and Q400-2Q200-C hot-pluggable when used with compatible network equipment?: Yes. Both models support hot-pluggable connections with their corresponding OSFP Finned Top or QSFP-DD main ports and QSFP56 branch ports. The 400G host port must also support and be configured for 2×200G breakout operation.