What is the practical difference between Q200-HDR-C and Q200-HDR-A for a 200G QSFP56 InfiniBand HDR link?

Q200-HDR-C is a passive copper twinax DAC for 0.5–3m links, while Q200-HDR-A is an active optical cable for 1–150m links. Both are straight-through QSFP56-to-QSFP56 assemblies carrying one 200Gb/s InfiniBand HDR connection.

How many electrical lanes does Q200-HDR-C use to carry the 200Gb/s InfiniBand HDR signal?

It uses four lanes. The 200Gb/s QSFP56 HDR interface operates over 4 × 50Gb/s PAM4 lanes, and Q200-HDR-C carries these lanes directly between its two QSFP56 ends without a breakout configuration.

Which cable lengths are available for Q200-HDR-C, and what type of connection is it designed for?

0.5–3m. Q200-HDR-C is designed for short-distance connections between two 200G QSFP56 InfiniBand HDR ports, using passive copper twinax transmission with low latency and near-zero power consumption.

What is the maximum available reach of Q200-HDR-A for a 200G QSFP56 InfiniBand HDR deployment?

Up to 150m. Q200-HDR-A uses integrated optical transmission and QSFP56 ends to extend one 200Gb/s InfiniBand HDR connection beyond the distance supported by the passive Q200-HDR-C cable.

Does Q200-HDR-A require separate optical transceivers or field-connected fiber patch cords?

No. Q200-HDR-A is an active optical cable with the optical engines and fibers integrated into the cable assembly. Its two QSFP56 ends plug directly into compatible ports without separate removable transceivers or external fiber patch cords.

Are Q200-HDR-C and Q200-HDR-A hot-pluggable in compatible QSFP56 ports?

Yes. Both cable types use hot-pluggable QSFP56 ends, allowing the complete cable assembly to be installed or replaced through compatible QSFP56 cages without opening or separating the integrated cable structure.

200G QSFP56 InfiniBand HDR

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200G QSFP56 to 200G QSFP56 InfiniBand HDR Active Optical Cable

Q200-HDR-A

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US$371.00
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200G QSFP56 to 200G QSFP56 InfiniBand HDR Passive Direct Attach Copper Twinax Cable

Q200-HDR-C

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US$53.00
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200G QSFP56 InfiniBand HDR Overview

The 200G QSFP56 InfiniBand HDR category contains two straight-through cable assemblies: one passive DAC and one AOC. Both models connect two 200G QSFP56 ports for InfiniBand HDR links, covering copper and optical transmission over lengths from 0.5m to 150m. The series supports connections in cloud computing, supercomputing, NVIDIA GPU-based systems, and InfiniBand storage architectures, with the DAC designed for short-distance links and the AOC extending connectivity across longer distances.

Q200-HDR-C is a 0.5–3m passive copper twinax cable with 200G QSFP56 connectors at both ends. It provides a direct InfiniBand HDR connection between two QSFP56 ports for short-distance links in supercomputers and hyperscale systems, with near-zero power consumption and low latency.

Q200-HDR-A is a 1–150m active optical cable connecting two 200G QSFP56 ports. It supports extended InfiniBand HDR links in cloud and supercomputing environments, including connections between NVIDIA GPU-based systems, InfiniBand networks, and InfiniBand storage platforms.

What is the practical difference between Q200-HDR-C and Q200-HDR-A for a 200G QSFP56 InfiniBand HDR link?: Q200-HDR-C is a passive copper twinax DAC for 0.5–3m links, while Q200-HDR-A is an active optical cable for 1–150m links. Both are straight-through QSFP56-to-QSFP56 assemblies carrying one 200Gb/s InfiniBand HDR connection.
How many electrical lanes does Q200-HDR-C use to carry the 200Gb/s InfiniBand HDR signal?: It uses four lanes. The 200Gb/s QSFP56 HDR interface operates over 4 × 50Gb/s PAM4 lanes, and Q200-HDR-C carries these lanes directly between its two QSFP56 ends without a breakout configuration.
Which cable lengths are available for Q200-HDR-C, and what type of connection is it designed for?: 0.5–3m. Q200-HDR-C is designed for short-distance connections between two 200G QSFP56 InfiniBand HDR ports, using passive copper twinax transmission with low latency and near-zero power consumption.
What is the maximum available reach of Q200-HDR-A for a 200G QSFP56 InfiniBand HDR deployment?: Up to 150m. Q200-HDR-A uses integrated optical transmission and QSFP56 ends to extend one 200Gb/s InfiniBand HDR connection beyond the distance supported by the passive Q200-HDR-C cable.
Does Q200-HDR-A require separate optical transceivers or field-connected fiber patch cords?: No. Q200-HDR-A is an active optical cable with the optical engines and fibers integrated into the cable assembly. Its two QSFP56 ends plug directly into compatible ports without separate removable transceivers or external fiber patch cords.
Are Q200-HDR-C and Q200-HDR-A hot-pluggable in compatible QSFP56 ports?: Yes. Both cable types use hot-pluggable QSFP56 ends, allowing the complete cable assembly to be installed or replaced through compatible QSFP56 cages without opening or separating the integrated cable structure.