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1m (3ft) NVIDIA/Mellanox Compatible 400G QSFP-DD to 2 x 200G QSFP56 Ethernet Active Optical Breakout Cable
1m (3ft) NVIDIA/Mellanox Compatible 400G QSFP-DD to 2 x 200G QSFP56 Ethernet Active Optical Breakout Cable
1m (3ft) NVIDIA/Mellanox Compatible 400G QSFP-DD to 2 x 200G QSFP56 Ethernet Active Optical Breakout Cable
P/N: Q2Q56-400G-A
US$1249.00
5
Reviews
2
Questions
safeguard
4-Year Warranty
30-Day Returns
30-Day Exchange
（1000 In Stock）

Product Highlights

Built-in Inphi Chip, COB Packaging
Low Power Consumption <4W (200G Per End), 8W (400G Per End)
Tested in Targeted Switches for Superior Performance, Quality, and Reliability
Increased Reliability-VCSEL, No MPO Connectors, Low BER
PAM4 Modulation, Supports 400G to 2x 200G Ethernet Interoperability
Thin and Light Weight Fiber with High Air Flow for Flexible Routing
OFNP-Rated, Hot Pluggable QSFP-DD and QSFP56 MSA Compliant
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Specifications
Q&A
Reviews
Resources
1m (3ft) NVIDIA/Mellanox Compatible 400G QSFP-DD to 2 x 200G QSFP56 Ethernet Active Optical Breakout Cable
The 400G QSFP-DD to 2x 200G QSFP56 breakout Ethernet active optical cables operate over multi-mode fibers (MMF). This breakout cable is compliant with IEEE 802.3, QSFP-DD MSA, SFF-8024, SFF-8679, SFF-8665, OIF-CEI-04.0, and CMIS 4.0. Thin and lightweight AOC cables simplify cable management, enabling an efficient system airflow, which is critical in high-density racks. It is used extensively in cloud and supercomputers due to its low cost, high-value proposition, and increased reliability.
Specifications
Part Number
Q2Q56-400G-A
Vendor Name
AICPLIGHT
Form Factor
QSFP-DD to 2x QSFP56
Max Data Rate
425Gbps(8x53.125Gb/s)
Media
Copper
Cable Type
OM3
Cable Length
1m (3ft)
Wire AWG
30AWG
Minimum Bend Radius
30mm
Transmitter Type
VSCEL
Receiver Type
PIN
Wavelength
850nm
Power Consumption
≤8W
Jacket Material
PVC (OFNR)
CDR (Clock and Data Recovery)
TX & RX Built-in CDR
Modulation Format
8x 50G-PAM4 to Dual 4x 50G-PAM4
Temperature
0 to 70°C (32 to 158°F)
DDM/DOM
Supported
FEC Function
RS-FEC
Protocols
IEEE 802.3cd, IEEE 802.3bs, QSFP-DD MSA, SFF-8024, SFF-8679, SFF-8665, CMIS 4.0, OIF-CEI-04.0
Warranty
5 Years
Certification
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Questions & Answers
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All (2) Compatibility (1)Installation (1)
Q:

Can these transceivers auto-negotiate with older models?

by 9***m on 2025-07-10 16:28:57

A:

Yes, backward compatibility is supported in many cases.

by Helpful on 2025-07-10 16:40:25

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comment icon Comment 0
Q:

How should cables be routed in a high-density rack?

by B***m on 2025-07-10 16:03:20

A:

Use cable managers to maintain airflow and prevent bending.

by Helpful on 2025-07-10 16:41:46

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Customer Reviews
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All (5) Performance (1)Compatibility (1)Ease of Use (1)Customer Support (1)Value (1)
y
y***m
2025-06-22 05:22:44
Confirmed Purchase
5.0

Plug-and-play experience was excellent. The cables came clean and ready for immediate deployment.

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n
n***m
2025-06-19 23:41:58
Confirmed Purchase
5.0

High-quality interconnects at a fraction of the price of branded cables. Ideal for scaling AI clusters on a budget.

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u
u***m
2025-06-12 00:21:24
Confirmed Purchase
5.0

Used in our GPU training pod (8x H100s) to connect each server node. Latency remained sub-microsecond, even with large tensor workloads.

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h
h***m
2025-06-02 00:51:15
Confirmed Purchase
5.0

Fully compatible with our NVIDIA ConnectX-6 NICs and Mellanox switches. No firmware warnings or handshake delays.

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comment icon Comment 0
h
h***m
2025-04-16 05:53:46
Confirmed Purchase
5.0

We had a shipping delay and the support team took ownership and resolved it quickly with a courier reroute.

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