Arista 400G QSFP-DD / QSFP56 Transceiver in Bangladesh — High-Speed 400G Data Center Connectivity

An Arista 400G QSFP-DD / QSFP56 Transceiver is a high-performance optical module designed for 400 Gigabit Ethernet networking. It delivers ultra-fast, low-latency connectivity for hyperscale data centers, cloud infrastructure, and enterprise backbone networks.

Arista 400G QSFP-DD modules use 8×50Gbps lanes (PAM4) to achieve 400Gbps throughput, enabling high-density and scalable networking.

Buy Arista 400G QSFP-DD / QSFP56 Transceiver in Bangladesh

Datacom Technologies BD offers:

• 100% genuine Arista-compatible 400G modules
• Support for SR8, DR4, FR4, LR4, ZR variants
• Competitive pricing in Bangladesh
• Compatibility support for Arista 7060X / 7280R / 7800 series
• Technical consultation & deployment support

Why Choose Arista 400G QSFP-DD Transceiver?

• ✔ 400Gbps ultra-high-speed connectivity
• ✔ PAM4 modulation for efficient bandwidth
• ✔ Digital Optical Monitoring (DOM/DDM)
• ✔ Hot-swappable and high-density design
• ✔ Supports breakout (4×100G / 2×200G)
• ✔ Optimized for hyperscale and cloud networks

Types of Arista 400G QSFP-DD / QSFP56 Transceivers

• 400GBASE-SR8 — Short range (MMF, up to 100m)
• 400GBASE-DR4 — Medium range (SMF, up to 500m)
• 400GBASE-FR4 / XDR4 — Long range (SMF, up to 2km)
• 400GBASE-LR4 / PLR4 — Extended range (up to 10km)
• 400GBASE-ZR / ZR+ — Long-haul DWDM (up to 120km+)
• AOC / DAC — Short-distance high-speed connectivity

Technical Overview

Popular Arista 400G QSFP-DD / QSFP56 Transceiver Models, Part Numbers & Server Compatibility at Datacom

Arista QDD-400G-SR8 – 400G QSFP-DD SR8 (100m MMF)

• Part Number: QDD-400G-SR8
• Type: SR8
• Distance: up to 100 m (OM4 MMF)
• Fiber: Multimode (MMF)
• Connector: MPO-16

 Compatibility

• Arista 400G QSFP-DD switches (e.g., 7050X4, 7060X6)
• Supports breakout:
  • 2×200G SR4
  • 2×100G SR4

 Use Case

• Data center short-range spine–leaf
• High-density MMF deployments

 Arista QDD-400G-SR8-C – 400G SR8 (multi-rate breakout)

• Part Number: QDD-400G-SR8-C
• Type: SR8 (enhanced breakout)
• Distance: up to 100 m
• Connector: MPO-16

 Compatibility

• Same as SR8 but adds:
  • 8×50G SR
  • 8×25G SR breakout

 Use Case

• Migration environments (25G / 50G servers)
• High flexibility leaf switches

 Arista QDD-400G-DR4 – 400G DR4 (500m SMF)

• Part Number: QDD-400G-DR4
• Type: DR4
• Distance: up to 500 m
• Fiber: Single-mode (SMF)
• Connector: MPO-12

 Compatibility

• Arista QSFP-DD switches
• Standard IEEE 400G DR4 optic (interop supported)

 Use Case

• Data center SMF fabric
• AI / HPC clusters

 Arista QDD-400G-FR4 – 400G FR4 (2km SMF)

• Part Number: QDD-400G-FR4
• Type: FR4 (CWDM)
• Distance: up to 2 km
• Fiber: SMF
• Connector: LC duplex

 Compatibility

• Arista QSFP-DD switches
• Interoperates with other FR4 optics (vendor-neutral)

 Use Case

• Data center interconnect (DCI)
• LC fiber infrastructure (no MPO)

 Arista QDD-400G-LR4 – 400G LR4 (10km SMF)

• Part Number: QDD-400G-LR4
• Type: LR4
• Distance: up to 10 km
• Fiber: SMF
• Connector: LC

Compatibility

• Arista 400G QSFP-DD platforms
• Used on campus / metro networks

 Use Case

• Inter-building links
• Long-distance enterprise backbone

Price in Bangladesh (2025 / 2026)

•  Contact Datacom for latest price & availability.

Best Use Cases

• Data center spine-leaf architecture
• Cloud infrastructure networking
• High-performance computing (HPC)
• Enterprise core networks
• 400G backbone & aggregation

Why Buy from Datacom Technologies BD?

• Genuine Arista-compatible products
• Expert configuration support
• Competitive BD pricing
• Local warranty service
• Fast nationwide delivery

Get in Touch with Datacom Technologies BD

• Call / WhatsApp: 01748-173213 | 01313-886347
• Email: sales@datacom.com.bd | datacomtechnologiesbd@gmail.com