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2m (7ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
2m (7ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
2m (7ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
P/N: QDD-400G-A
US$280.50
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 <8W Per End
Tested in Targeted Switches for Superior Performance, Quality, and Reliability
Increased Reliability-VCSEL, No MPO Connectors, Low BER
8x50G PAM4 Retimed 400GAUI-69 Electrical Interface
Thin and Light Weight Fiber with High Air Flow for Flexible Routing
OFNP-Rated, Hot Pluggable QSFP-DD MSA Compliant
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Specifications
Q&A
Reviews
Resources
2m (7ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
The 400G QSFP-DD active optical cables are designed for use in 400 Gigabit Ethernet links over OM4 multimode fibers, and contain eight multi-mode fibers (MMF) optic transceivers per end, each operating at data rates of up to 53Gb/s. This active optical cable is compliant with IEEE 802.3cd, OIF-CEI-04.0, QSFP-DD MSA, and QSFP-DD-CMIS-rev4p0. 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
QDD-400G-A
Vendor Name
AICPLIGHT
Form Factor
QSFP-DD to QSFP-DD
Max Data Rate
400Gbps
Media
Copper
Cable Type
OM4
Cable Length
2m (7ft)
Minimum Bend Radius
30mm
Transmitter Type
VSCEL
Receiver Type
850nm PIN
Wavelength
850nm
Power Consumption
≤8W
Jacket Material
PVC (OFNR)
CDR (Clock and Data Recovery)
TX & RX Built-in CDR
Modulation Format
PAM4
Temperature
0 to 70°C (32 to 158°F)
DDM/DOM
Supported
Inbuilt FEC
No
Protocols
IEEE 802.3cd, OIF-CEI-04.0, QSFP-DD MSA,QSFP-DD-CMIS-rev4p0
Application
8x 50G-PAM4
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:

Can this cable be used with OSFP/QSFP-DD ports?

by z***m on 2025-07-10 09:55:57

A:

Yes, we offer cables with a wide range of interface compatibility.

by Helpful on 2025-07-10 10:03:21

like icon Helpful 0
comment icon Comment 0
Q:

Are these transceivers used in cloud computing?

by h***m on 2025-07-10 09:23:02

A:

Yes, they are widely used in public and private cloud infrastructure.

by Helpful on 2025-07-10 10:03:42

like icon Helpful 0
comment icon Comment 0
Q:

Are these modules low power?

by q***m on 2025-07-10 09:15:25

A:

Yes, we offer energy-efficient versions with low power consumption.

by CPLIGHT on 2025-07-10 10:04:29

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comment icon Comment 0
Q:

Are these modules single-mode or multimode?

by A***m on 2025-07-10 09:09:10

A:

We offer both single-mode and multimode versions to meet different deployment needs.

by Helpful on 2025-07-10 10:03:00

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comment icon Comment 0
Q:

Is polarity important during installation?

by y***m on 2025-07-10 08:43:56

A:

Yes, ensure Type A/B polarity matches across the link.

by CPLIGHT on 2025-07-10 10:04:07

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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
2025-06-25 01:40:44
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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z
z***m
2025-06-16 17:40:09
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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E
E***m
2025-06-07 16:45:04
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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f
f***m
2025-04-10 18:52:51
Confirmed Purchase
5.0

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

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d
d***m
2025-04-04 16:16:15
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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