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2m (7ft) NVIDIA (InfiniBand) Compatible 800G OSFP Finned Top to 2 x 400G OSFP Flat Top InfiniBand NDR Passive Direct Attach Copper Breakout Cable
P/N: O2OSFP-800G-CU
US$299.00
10
Reviews
5
Questions
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4-Year Warranty
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(1000 In Stock)

Product Highlights

Qualified for InfiniBand NDR End-to-end Systems
Lowest-latency, Low Insertion Loss, Low Crosstalk, High-speed Interconnect
8x 100G-PAM4 to Dual 4x 100G-PAM4
100% Verified by the Original, Perfectly Compatible with NVIDIA QM9700/9790 Devices
Minimum Bend Radius 72mm for Flexible Routing
Simplifies Patching and Offers a Cost-effective Way for Short Links
Compliant with OSFP MSA, IEEE 802.3ck and CMIS v4.0
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2m (7ft) NVIDIA (InfiniBand) Compatible 800G OSFP Finned Top to 2 x 400G OSFP Flat Top InfiniBand NDR Passive Direct Attach Copper Breakout Cable
The NVIDIA/Mellanox InfiniBand MCP7Y00-N002 Cable is an 800Gb/s twin-port OSFP to two 400Gb/s twin-port OSFP Direct Attached Copper dual breakout cable. The 8-channel twin-port OSFP end uses a finned top form-factor for use in Quantum-2 and Spectrum-4 switch cages. The two 400G ends support 4-channels of 100G-PAM4 (400G) and use a flat top OSFP for use in ConnectX-7 adapters using riding heat sinks on the connector cage. This cable is compliant with OSFP MSA (Multi-Source Agreement) and IEEE 802.3ck 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 Ethernet Compatible
MCP7Y00-N002
Vendor Name
AICPLIGHT
Form Factor
800G OSFP (Finned Top) to 2× 400G OSFP (Flat Top)
Max Data Rate
800Gbps
Media
Copper
Cable Type
Passive Twinax
Minimum Bend Radius
72mm
Power Consumption
≤0.1W
Cable Length
2m (7ft)
Wire AWG
26AWG
Temperature Range
0 to 70°C (32 to 158°F)
Jacket Material
PET
Protocols
OSFP MSA, CMIS Rev 4.0, IEEE 802.3 ck
Modulation Format
PAM4
Certification
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Questions & Answers
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All (5) Management (1)Product (1)Compatibility (1)Installation (1)Performance (1)
Q:

What is the difference between HDR and NDR InfiniBand cables?

by h***m on 2025-07-10 09:44:04

A:

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 Helpful on 2025-07-10 10:23:26

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Q:

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

by 5***m on 2025-07-10 09:38:43

A:

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 10:24:04

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Q:

Do these cables require special configuration after plugging in?

by j***m on 2025-07-10 09:20:26

A:

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

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

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Q:

Do InfiniBand AOC cables support long-distance connections?

by c***m on 2025-07-10 09:10:16

A:

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

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Q:

Can these cables be used for GPU Direct RDMA communication?

by 4***m on 2025-07-10 09:07:14

A:

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

by Helpful on 2025-07-10 10:24:35

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Customer Reviews
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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)
H
H***m
2025-06-30 07:58:03
Confirmed Purchase
5.0

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

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1
1***m
2025-06-27 14:46:58
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.

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1
1***m
2025-06-18 18:12:07
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.

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f
f***m
2025-06-17 23:35:35
Confirmed Purchase
5.0

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

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7
7***m
2025-06-10 09:11:31
Confirmed Purchase
5.0

We had tight routing paths between racks and these DACs were flexible enough for clean cable management without strain.

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s
s***m
2025-06-02 17:02:01
Confirmed Purchase
5.0

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

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a
a***m
2025-05-07 23:47:13
Confirmed Purchase
5.0

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

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6
6***m
2025-05-01 14:15:04
Confirmed Purchase
5.0

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

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1
1***m
2025-04-27 19:01:12
Confirmed Purchase
5.0

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

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l
l***m
2025-04-25 15:44:08
Confirmed Purchase
5.0

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

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