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2m (7ft) Arista Compatible 400G QSFP-DD to 4 x 100G QSFP56 Active Optical Breakout Cable
2m (7ft) Arista Compatible 400G QSFP-DD to 4 x 100G QSFP56 Active Optical Breakout Cable
2m (7ft) Arista Compatible 400G QSFP-DD to 4 x 100G QSFP56 Active Optical Breakout Cable
P/N: Q4Q56-400G-A
US$1839.00
5
Reviews
5
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 <3.5W (100G Per End), 12W (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 4x 100G 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
2m (7ft) Arista Compatible 400G QSFP-DD to 4 x 100G QSFP56 Active Optical Breakout Cable
The 400G QSFP-DD to 4x 100G QSFP56 breakout active optical cables are designed for use in 400 Gigabit Ethernet links over OM3 multimode fibers, each operating at data rates of up to 53.125Gbps per channel by PAM4 modulation. This breakout cable is compliant with IEEE 802.3cd, OIF-CEI, QSFP-DD MSA, QSFP-DD-CMIS, IEEE 802.3bs Annex120E SFF-8024, SFF-8679, SFF-8702 standards. 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
Q4Q56-400G-A
Vendor Name
AICPLIGHT
Form Factor
QSFP-DD to QSFP56
Max Data Rate
400Gbps
Media
Copper
Cable Type
OM3
Cable Length
2m (7ft)
Wire AWG
30AWG
Minimum Bend Radius
30mm
Transmitter Type
VSCEL
Receiver Type
PIN
Wavelength
850nm
Power Consumption
400G <12W; 100G<3.5W
Jacket Material
PVC (OFNR)
CDR (Clock and Data Recovery)
TX & RX Built-in CDR
Modulation Format
8x 50G-PAM4
Temperature
0 to 70°C (32 to 158°F)
DDM/DOM
Supported
Host FEC
Pre-FEC BER 2.4E-4
Protocols
IEEE 802.3cd, OIF-CEI-04.0, QSFP-DD MSA, QSFP-DD-CMIS-Rev4.0, SFF-8024, IEEE 802.3bs Annex120E
Application
400G Ethernet
Warranty
5 Years
Certification
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Questions & Answers
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All (5) Application (1)Product (1)Compatibility (1)Installation (1)Performance (1)
Q:

Do these cables support PAM4 modulation?

by h***m on 2025-07-10 09:50:31

A:

Yes, many modules and cables support PAM4 encoding.

by Helpful on 2025-07-10 09:59:21

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comment icon Comment 0
Q:

How do I verify the module is working?

by T***m on 2025-07-10 09:34:59

A:

Use switch CLI or monitoring tools to check link status.

by Helpful on 2025-07-10 09:58:54

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comment icon Comment 0
Q:

What cable types are supported?

by Q***m on 2025-07-10 08:53:38

A:

Supported cables include OS2, OM3, OM4, and OM5.

by Helpful on 2025-07-10 09:58:13

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Q:

Are these suitable for edge computing?

by K***m on 2025-07-10 08:25:57

A:

Yes, compact and high-performance modules are available for edge devices.

by CPLIGHT on 2025-07-10 09:58:33

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Q:

Is the firmware upgradeable?

by b***m on 2025-07-10 08:20:01

A:

Some models support firmware upgrades; please contact us for details.

by Helpful on 2025-07-10 09:57:49

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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)
t
t***m
2025-06-26 05:37:54
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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j
j***m
2025-06-22 12:05:52
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
2025-06-20 10:19:20
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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x
x***m
2025-04-09 05:16:51
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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n
n***m
2025-04-08 13:03:02
Confirmed Purchase
5.0

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

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