400G QSFP112 to QSFP112 Active Electrical Cable (AEC), InfiniBand NDR / 400GBase-CR4

Overview

The NSComm 400G QSFP112 Active Electrical Cable (AEC) is a high-performance copper interconnect designed for 400G PAM4 short-reach links, using retimer chips at both ends to maintain signal integrity. Compared with passive copper, AEC is built to overcome PAM4 signal loss and reduce data errors, enabling longer, more stable copper links in modern data centers and AI/HPC racks.

Because NVIDIA InfiniBand and NVIDIA-based AI infrastructure are mainstream in today's market, this AEC is optimized for NVIDIA (IB) environments (choose the NVIDIA option on the product page), while still supporting vendor coding options for broader use when required. It features a built-in Marvell chip with up to 8W per end power consumption and supports the retimed 400GAUI-4 electrical interface (4100G PAM4). It is compliant with QSFP112 MSA, IEEE 802.3ck 400GBase-CR4, and CMIS 5.0.

Compatibility Options (Coding) - NVIDIA Focus, Multi-Vendor Ready

Recommended option: choose NVIDIA (IB) coding for NVIDIA InfiniBand NDR fabrics and common NVIDIA adapter/DPU environments.
Also available: selectable coding options for other platforms (choose the matching option on the product page).

Not sure which coding you need? Contact our certified engineers and we'll help confirm the right option for your exact model.

Use Scenarios / Applications

NVIDIA NDR rack links: connect QSFP112-based switches and adapters in InfiniBand NDR racks for stable 400G copper links.
Switch to ConnectX / DPU connections: ideal for connecting switch ports to QSFP112 NICs/DPUs inside the rack.
ToR / leaf short links: short-distance 400G interconnects within racks or between adjacent racks where optics are unnecessary.
PAM4 reliability upgrade: choose AEC when passive copper struggles with signal integrity at 400G.

Key Specifications

Specification	Details
Vendor Name	NSComm
Product Type	400G QSFP112 Active Electrical Cable (AEC)
Form Factor	QSFP112 to QSFP112
Max Data Rate	400Gbps
Media	Copper
Cable Type	AEC (Active Electrical Cable)
Signal Conditioning	Retimer at both ends (Marvell chip)
Electrical Interface	400G AUI-4 (4100G PAM4, retimed)
Modulation	4 x 100G-PAM4
Power Consumption	<8W per end
Minimum Bend Radius	26.5mm
Wire AWG	32AWG
Jacket Material	PET
DDM/DOM	Supported
Temperature Range	0 to 70C
Standards / Compliance	QSFP112 MSA, IEEE 802.3ck 400GBase-CR4, CMIS 5.0
Warranty	5 Years

Why Choose NSComm 400G QSFP112 AEC?

NVIDIA-ready: optimized for NVIDIA InfiniBand NDR and common NVIDIA QSFP112 platforms.
Better PAM4 stability: dual-end retimers improve signal integrity vs passive copper.
High-speed compliant: supports 400GBase-CR4 and CMIS 5.0 ecosystems.
Fast deployment: plug-and-play QSFP112 ends simplify rack cabling.
Low cabling complexity: ideal for short links within/adjacent racks where optics add cost.

Options

Available lengths: 1m, 2m, 3m
Coding options: select NVIDIA (IB) or other vendor coding on the product page

More Details

Quality Certifications

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Warranty

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