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1m (3ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
1m (3ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
1m (3ft) Cisco Compatible 400G QSFP-DD Active Optical Cable
P/N: QDD-400G-A
US$999.00
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 <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
1m (3ft) 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
1m (3ft)
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 (2) Compatibility (1)Installation (1)
Q:

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

by q***m on 2025-07-10 16:12:29

A:

Use cable managers to maintain airflow and prevent bending.

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

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comment icon Comment 0
Q:

Can these transceivers auto-negotiate with older models?

by i***m on 2025-07-10 15:27:03

A:

Yes, backward compatibility is supported in many cases.

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

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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)
E
E***m
2025-07-02 11:06:30
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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comment icon Comment 0
D
D***m
2025-06-14 19:45:32
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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Y
Y***m
2025-05-15 07:23:10
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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d
d***m
2025-05-04 04:36:02
Confirmed Purchase
5.0

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

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comment icon Comment 0
P
P***m
2025-04-29 06:40:06
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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