200G QSFP56 | Direct Attach Cable (DAC)

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1m(3ft) NVIDIA/Mellanox MCP1650-V001E30(980-9I54C-00V001) Compatible 200G QSFP56 InfiniBand HDR Passive Direct Attach Copper Twinax Cable

P/N: Q200-Q200-C1

US$49.00

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4-Year Warranty

30-Day Returns

30-Day Exchange

（1000 In Stock）

Product Highlights

Qualified for InfiniBand HDR End-to-end Systems

Lowest-latency, Low Insertion Loss, Low Crosstalk, High-speed Interconnect

4x 50G-PAM4 to 4x 50G-PAM4

100% Verified by the Original, Perfectly Compatible with NVIDIA QM8700 Devices

Minimum Bend Radius 34.5mm for Flexible Routing

Simplifies Patching and Offers a Cost-effective Way for Short Links

Specifications

Q&A

Reviews

Resources

1m(3ft) NVIDIA/Mellanox MCP1650-V001E30(980-9I54C-00V001) Compatible 200G QSFP56 InfiniBand HDR Passive Direct Attach Copper Twinax Cable

NVIDIA/Mellanox compatible 200Gb/s QSFP56 to 200Gb/s QSFP56 InfiniBand HDR Direct Attached Copper cable. Using the Quad Small Form Factor Pluggable 56 (QSFP56) and contains four high-speed electrical copper pairs, each operating at data rates of up to 50Gb/s. This cable is compliant with QSFP56 MSA (Multi-Source Agreement) and IEEE 802.3cd standards.
DACs offer the lowest latency, so are widely used in data centers to connect servers and GPU compute systems to the top-of-rack (TOR) switches and link spine-to-super-spine switches inside racks over short cable lengths. DACs are also used to create InfiniBand storage fabrics with hard-disk-drive (HDD) and flash memory subsystems.
Featuring a simple design and minimal components, DAC cables offer the lowest-cost, lowest-latency, and near-zero-power connections for high-speed links. They enhance port bandwidth, density, configurability, and reduce power requirements in supercomputers and hyperscale systems.

Specifications

NVIDIA/Mellanox InfiniBand Compatible

MCP1650-V001E30(980-9I54C-00V001)

Vendor Name

AICPLIGHT

Form Factor

QSFP56 to QSFP56

Max Data Rate

200Gbps

Media

Copper

Cable Type

Passive Twinax

Cable Length

1m (3ft)

Wire AWG

30AWG

Minimum Bend Radius

34.5mm

Power Consumption

≤0.5W

Cable Type

Passive Twinax

MTBF

≈50 Million Hours

Jacket Material

PVC (OFNR)

Commercial Temperature Range

0 to 70°C (32 to 158°F)

Protocols

IEEE 802.3cd, SFF-8661, SFF-8636, SFF-8417, SFF-8679

Application

200G Ethernet

Warranty

5 Years

Certification

Questions & Answers

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All (5) Management (1)Product (1)Compatibility (1)Installation (1)Performance (1)

Can these cables be used for GPU Direct RDMA communication?

by w***m on 2025-07-10 09:52:36

Absolutely. These InfiniBand cables support GPU Direct RDMA, enabling low-latency, high-throughput data transfers directly between GPUs across the fabric.

by CPLIGHT on 2025-07-10 10:24:36

Helpful 0

What is the difference between HDR and NDR InfiniBand cables?

by r***m on 2025-07-10 09:29:18

HDR (High Data Rate) supports up to 200Gb/s per port, while NDR (Next Data Rate) can handle 400Gb/s. Both are used for high-performance computing, but NDR is designed for newer-generation systems requiring ultra-high bandwidth.

by CPLIGHT on 2025-07-10 10:23:26

Helpful 0

Do InfiniBand AOC cables support long-distance connections?

by f***m on 2025-07-10 09:18:03

Yes, AOC (Active Optical Cables) support longer distances than DACs, typically up to 30 meters or more, while maintaining low latency and high bandwidth transmission.

by Helpful on 2025-07-10 10:26:18

Helpful 0

Are these InfiniBand DAC/AOC cables compatible with NVIDIA/Mellanox ConnectX NICs?

by q***m on 2025-07-10 09:06:39

Yes, our InfiniBand DAC and AOC cables are fully compatible with NVIDIA/Mellanox ConnectX-5, ConnectX-6, and ConnectX-7 NICs, as well as with NVIDIA Quantum and Spectrum switches.

by Helpful on 2025-07-10 10:24:05

Helpful 0

Do these cables require special configuration after plugging in?

by v***m on 2025-07-10 09:02:24

No special configuration is needed. The cables are hot-swappable and designed for plug-and-play operation in InfiniBand environments.

by CPLIGHT on 2025-07-10 10:25:43

Helpful 0

Customer Reviews

Write a review

All (10) Performance (1)Compatibility (1)Ease of Use (1)Customer Support (1)Value (1)Reliability (1)Flexibility (1)Scalability (1)Quality (1)Delivery (1)

d***m

2025-07-05 03:18:15

Confirmed Purchase

5.0

Order arrived earlier than expected. All cables were individually tested and labeled, saving us time during rack installation.

Helpful 0

k***m

2025-07-02 22:35:35

Confirmed Purchase

5.0

Running 24/7 in an AI training environment with zero errors so far. Excellent quality and heat management.

Helpful 0

N***m

2025-06-29 04:58:11

Confirmed Purchase

5.0

We used breakout versions (1x400G to 4x100G) to expand our interconnect fabric and they worked flawlessly.

Helpful 0

U***m

2025-06-04 02:23:59

Confirmed Purchase

5.0

Cables were clearly labeled and well packaged. Plug-and-play setup made our data center upgrade smooth and fast.

Helpful 0

t***m

2025-05-21 11:52:31

Confirmed Purchase

5.0

Compared to OEM versions, these cables offer the same performance at a significantly lower cost. Great for large-scale deployment.

Helpful 0

S***m

2025-05-15 20:35:39

Confirmed Purchase

5.0

Customer service helped confirm the pinout for a custom breakout setup. Very knowledgeable and responsive team.

Helpful 0

8***m

2025-05-14 12:30:19

Confirmed Purchase

5.0

We used these InfiniBand HDR DAC cables to link GPU servers in our HPC cluster. The latency and bandwidth were excellent — no packet loss even under full load.

Helpful 0

u***m

2025-04-28 03:37:26

Confirmed Purchase

5.0

Worked out of the box with ConnectX-6 NICs and Quantum switches. Auto-negotiation and link detection were flawless across all ports.

Helpful 0

N***m

2025-04-09 23:51:39

Confirmed Purchase

5.0

The connectors are solid, and the shielding is robust. No damage or signal degradation even after multiple insertions.