Cisco QDD 400G Module in Bangladesh — High-Speed Data Center Connectivity

A Cisco QDD 400G Module (QSFP-DD 400G) is a next-generation optical transceiver designed to deliver 400Gbps ultra-high-speed connectivity for modern data centers, cloud infrastructure, and enterprise core networks. It uses the QSFP-DD (Quad Small Form-Factor Pluggable Double Density) form factor to support high-density and scalable networking.

Cisco 400G QSFP-DD modules provide flexible connectivity options across fiber and copper interfaces, enabling efficient data transmission in high-performance environments.

Buy Cisco QDD 400G Module in Bangladesh at Best Price

Datacom Technologies BD supplies genuine Cisco 400G QSFP-DD (QDD) modules with full compatibility for Cisco switches and routers, along with expert support and nationwide delivery.

Key Features

• High-speed 400Gbps data transmission
• QSFP-DD form factor for high port density
• Supports 4×100G breakout configuration
• Hot-swappable for easy installation
• Backward compatible with QSFP28 / QSFP56 modules
• Supports single-mode, multimode fiber, and DAC/AOC cables
• Optimized for power efficiency and thermal performance

Types of Cisco QDD 400G Modules

• SR8 (Short Range) — Up to ~100m over multimode fiber
• DR4 / FR4 (Medium Range) — Up to 500m–2km over SMF
• LR4 / LR8 (Long Range) — Up to 10km transmission
• ZR / ZR+ (Coherent Optics) — Long-distance DWDM (80km–1000km+)
• DAC / AOC Cables — Short-distance rack-to-rack connectivity

Popular Cisco QDD 400G Module Models, Part Numbers & Server Compatibility at Datacom

Cisco QDD 400G Modules (Popular Models)

 QDD-400G-DR4-S

• Type: 400GBASE-DR4
• ✔ Up to 500 m over SMF (MPO-12)
• ✔ Breakout: 4×100G
• ✔ Data centers & HPC
• ✔ Compatible with QSFP-DD ports on Cisco switches

 QDD-400G-FR4-S

• Type: 400GBASE-FR4
• ✔ Up to 2 km over SMF (LC duplex)
• ✔ CWDM (4 wavelengths)
• ✔ Leaf–spine & enterprise core
• ✔ Widely used in data center interconnect

 QDD-400G-LR4-S

• Type: 400GBASE-LR4
• ✔ Up to 10 km SMF
• ✔ LC connector
• ✔ Campus / metro networks
• ✔ Long-distance enterprise links

 QDD-400G-SR8-S

• Type: 400GBASE-SR8
• ✔ Up to 100 m over OM4 MMF
• ✔ MPO-16 connector
• ✔ Short-range data center links
• ✔ Breakout: 8×50G or 2×200G

 QDD-400G-SR4.2-BD

• Type: 400GBASE-SR4.2 (BiDi)
• ✔ Up to 100 m MMF
• ✔ MPO-12 connector
• ✔ Breakout: 4×100G
• ✔ Efficient fiber usage (BiDi tech)

 QDD-400G-BD

• Type: 400G BiDi (duplex MMF)
• ✔ 70–100 m MMF
• ✔ LC connector
• ✔ Reduced fiber count
• ✔ High-density data centers

 QDD-4X100G-FR-S

• Type: 4×100G breakout module
• ✔ Up to 2 km SMF
• ✔ MPO-12 connector
• ✔ Breakout to QSFP28 100G modules
• ✔ Flexible network design

 QDD-4X100G-LR-S

• Type: 4×100G LR breakout
• ✔ Up to 10 km SMF
• ✔ MPO-12 connector
• ✔ Telecom & long-distance networks

 QDD-2X100-CWDM4-S

• Type: Dual 100G module
• ✔ Up to 2 km SMF
• ✔ Dual LC connectors
• ✔ Breakout: 2×100G
• ✔ Enterprise backbone

 QDD-400G-ZR-S

• Type: 400G ZR coherent optics
• ✔ ~80–120 km (DWDM)
• ✔ DCI (data center interconnect)
• ✔ Telecom / ISP networks

 QDD-400G-ZRP-S

• Type: 400G ZR+
• ✔ 500–1000+ km DWDM
• ✔ Long-haul transport
• ✔ Carrier-grade networks

 QDD-400-AOC / DAC Series

• Type: Active Optical Cable / Direct Attach
• ✔ 1–30 m (AOC) / short copper (DAC)
• ✔ Rack-to-rack connections
• ✔ Low cost & low latency

Cisco QDD 400G Module Price in Bangladesh

•  Contact Datacom Technologies BD for updated pricing and project-based quotations.

Common Use Cases

• Hyperscale and cloud data centers
• High-performance computing (HPC)
• Data center interconnect (DCI)
• ISP and telecom backbone networks
• Enterprise core and aggregation layers

Why Choose Cisco QDD 400G Module?

• Industry-leading 400G optical technology
• High-density and scalable networking solution
• Flexible breakout and deployment options
• Reliable performance for mission-critical environments
• Future-ready for next-generation network infrastructure

Order Cisco QDD 400G Module in Bangladesh

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