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 oC to 70 oC 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 400G DR4++? A: It is a 10km parallel single-mode solution, effectively a 4x 100G LR1 aggregator.

Q: Can I use this with 100G LR1 modules? A: Yes, utilizing a 4x breakout cable, it connects to four 100G LR1 SFP-DD or QSFP28 modules.

Q: Why use MPO for 10km instead of LC? A: Using parallel fiber (MPO) allows for lower cost optics compared to internal WDM multiplexing.

Q: Is FEC required? A: Yes, host KP4 FEC is required for error-free 10km transmission.

Technical Documentation

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

Download Datasheet PDF

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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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