400G QSFP56-DD DR4++

Vitex Part #: VD-4CDR4CP-XA

Vitex VD-4CLR4CP-AA is designed for 400G optical connections of up to 10km. The transceiver is a fully integrated optical transceiver modulated using a 4-level pulse amplitude modulation (PAM4) format that transmits at a data rate of 425Gbps over 4 lanes, each running at 106.25Gbps.

Features
Specifications
Applications
FAQs
Datasheet

Compliant with IEEE Std 802.3bs
Compliant with IEEE Std 802.3cu 100G LR1 optical specifications
Compliant with QSFP-DD MSA
Compliant with CMIS4.0 Management interface specifications
Parallel MPO-12 receptacle 4 x 106.25Gbps PAM4 parallel lanes 8 x 53.125Gbps PAM4 electrical interface
Transmission distance up to 10Km SMF
Single 3.3V power supply
Power consumption <8W
Commercial operating temperature: 0°C to 70°C
RoHS Compliant

Form Factor	QSFP-DD
Data Rate	400G
Wavelength	1310nm
Distance	10km
Connector	MPO-12
Protocol	Ethernet
Temperature	Commercial (0–70°C)

AI Data Centers Data Center Interconnect High Performance Computing (HPC)

Q: What is the 400G QSFP56-DD DR4++?
A: It is a 400G optical transceiver in the QSFP-DD form factor, supporting Ethernet with a reach of 10km over Single-Mode Fiber (SMF).

Q: What is the maximum transmission distance?
A: This transceiver supports up to 10km over Single-Mode Fiber (SMF) at 1310nm.

Q: What connector type does this use?
A: It uses a MPO-12 connector with Single-Mode Fiber (SMF).

Q: What applications is this designed for?
A: It is designed for AI Data Centers, Data Center Interconnect, High Performance Computing (HPC).

Q: Is this module compatible with my switch or router?
A: This transceiver is QSFP-DD MSA compliant, meaning it is designed to work with any platform that supports the QSFP-DD standard. Contact Vitex engineering to confirm compatibility with your specific hardware.

Technical Documentation

Access comprehensive technical specifications, mechanical diagrams, and validation reports.

Download Datasheet PDF

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Transceivers worked as expected. Very good value.

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I had a good experience with customer service. Their engineer helped me out with some technical questions and recommended the right product. Highly recommend your company to all my co-workers.

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Canada

Great Customer Service. Good on time delivery.

Kimberly D.

Buyer at a large defense contractor

As a developer of medical systems, we are required to comply with EMC standards for medical devices. Vitex devices met this requirement every time we tested them. The other devices we tested did not even come close.

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You're the best, thanks a bunch to Vitex!

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Thank you all so much for all you have done for our company with its very needed products. No returns, none of your competition can beat that record!!

Gail E.

Buyer at a leading video security company

I am using the transceivers in our network. Impressed with their BER performance.

Eli L., CA

Thank you for your quick response and friendly service.

Wayne M.

Partner at a leading Pro AV design company

Tested & Validated

Built For Real Deployment Environments

Every Vitex optical product undergoes optical testing, interoperability validation, and system-level verification to ensure performance, reliability, and long-term availability in production networks.

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