Arista QDD-400G-VSR4 – QSFP-DD VSR4 Optical Transceiver
The Arista QDD-400G-VSR4 from Datacom Technologies BD is a high-performance 400 Gigabit optical transceiver designed for very short-reach, high-density connectivity over multimode fiber. It is ideal for modern data centers, AI clusters, and cloud infrastructures that require ultra-low latency 400G transmission for in-rack and adjacent-rack connections on Arista QSFP-DD-enabled platforms.
Specification Table
| Feature | Details |
|---|
| Product Name | Arista QDD-400G-VSR4 |
| Form Factor | QSFP-DD |
| Data Rate / Capacity | 400Gbps |
| Standard / Protocol | 400GBASE-VSR4 |
| Fiber Type / Interface | Multimode Fiber (MMF) |
| Wavelength / Technology | 850 nm |
| Transmission Distance | Up to 50 m (OM4) / 30 m (OM3) |
| Connector Type | MPO-12 |
| Lane Configuration | 4 × 100G |
| Modulation | PAM4 |
| Compliance | IEEE 802.3bs, RoHS |
| Compatibility | Arista QSFP-DD switches and platforms |
| Application | Very short-reach data center networking |
Arista QDD-400G-VSR4 Description
The Arista QDD-400G-VSR4 optical transceiver is engineered to deliver efficient and reliable 400G Ethernet connectivity over multimode fiber using four 100G PAM4 lanes. Optimized for very short-reach applications, it operates at an 850 nm wavelength and provides stable signal integrity with minimal latency, making it ideal for dense data center environments where equipment is located within the same rack or adjacent racks.
Its compact QSFP-DD form factor enables extreme port density while maintaining low power consumption and thermal stability. Fully tested for interoperability with Arista networking equipment, the VSR4 transceiver offers a scalable and energy-efficient solution for high-capacity data center fabrics supporting AI workloads, cloud computing, and high-performance analytics.
Key Features
• Supports 400Gbps high-speed optical transmission
• VSR4 very short-reach multimode fiber connectivity
• 4 × 100G PAM4 lane architecture
• 850 nm wavelength for stable short-distance performance
• MPO-12 connector for high-density cabling
• Ultra-low latency for in-rack deployments
• Hot-pluggable QSFP-DD form factor
• Optimized for Arista 400G switching platforms
Where It Can Be Used
• Hyperscale and enterprise data centers
• In-rack and adjacent-rack connections
• AI and machine learning clusters
• High-performance computing (HPC) environments
• Leaf-spine data center architectures
• High-density 400G switching deployments
Get in Touch with Datacom Technologies BD
Call/WhatsApp: 01748173213
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