Cisco QSFP 40G Module in Bangladesh — Reliable 40G Data Center Connectivity

A Cisco QSFP 40G Module (QSFP+) is a high-speed optical transceiver designed to deliver 40Gbps data transmission for data centers, enterprise networks, and telecom infrastructure. It provides efficient, scalable, and cost-effective connectivity for modern high-bandwidth applications.

Cisco QSFP+ modules use four parallel 10Gbps channels to achieve 40G throughput, ensuring stable and high-performance networking.

Buy Cisco QSFP 40G Module in Bangladesh at Best Price

Datacom Technologies BD supplies genuine Cisco QSFP 40G optical modules with full compatibility for Cisco switches, routers, and enterprise networking environments across Bangladesh.

Key Features

• High-speed 40Gbps Ethernet connectivity
• QSFP+ form factor for high port density
• Supports 4×10G breakout configuration
• Hot-swappable for easy installation
• Compatible with multimode and single-mode fiber
• Low power consumption (<2.5W typical)
• Digital diagnostics monitoring (DDM/DOM) support

Types of Cisco QSFP 40G Modules

• SR4 (Short Range) — Up to 100–150m over multimode fiber
• CSR4 (Extended SR) — Up to 300–400m
• LR4 (Long Range) — Up to 10km over single-mode fiber
• ER4 (Extended Range) — Up to 40km transmission
• DAC / AOC Cables — Short-distance rack connectivity

Popular Cisco QSFP 40G Module Models, Part Numbers & Server Compatibility at Datacom

QSFP-40G-SR4

Type: 40GBASE-SR4 (Multimode fiber, MPO)
Reach: 100–150 m (OM3/OM4)

Compatibility:

• IEEE 40GBASE-SR4 compliant
• Supports 4×10G breakout to SFP+ (10GBASE-SR) using MPO breakout cable
• Interoperable with standard SR4 optics

 QSFP-40G-SR4-S (S-Class)

Type: Cost-optimized SR4
Reach: 100–150 m

Compatibility:

• Works with QSFP+ 40G ports only
• ❌ No 4×10G breakout support
• Standard SR4 interoperability but limited features

 QSFP-40G-CSR4

Type: Extended SR4 (parallel MMF)
Reach: up to 300–400 m

Compatibility:

• Supports 4×10G breakout (SR)
• Interoperable with:
  • 40GBASE-SR4
  • 10GBASE-SR (per lane)

 QSFP-40G-CSR-S

Type: Duplex MMF (LC connector)
Reach: up to 300–400 m

Compatibility:

• Uses duplex LC (no MPO required)
• Reuses existing 10G MMF infrastructure
• ❌ No breakout support
• Not FCoE supported

 QSFP-40G-SR-BD (BiDi)

Type: Bi-directional MMF (LC duplex)
Reach: 100–150 m

Compatibility:

• Works over 2-fiber duplex MMF (like 10G)
• Enables upgrade from 10G to 40G without new fiber
• Compatible with all QSFP+ BiDi platforms

 QSFP-40G-LR4

Type: 40GBASE-LR4 (Single-mode fiber)
Reach: up to 10 km

Compatibility:

• IEEE 40GBASE-LR4 compliant
• Works on:
  • Cisco Nexus / Catalyst / ASR platforms
• Interoperable with other LR4 optics

 QSFP-40G-LR4-S (S-Class)

Type: Cost-optimized LR4
Reach: 10 km

Compatibility:

• Standard LR4 optical behavior
• ❌ No FCoE support
• Works only at 40G Ethernet rate

 WSP-Q40GLR4L (LR4 Lite)

Type: LR4 Lite
Reach: up to 2 km

Compatibility:

• Interoperable with standard LR4 optics (limited distance)
• Used for data center interconnect
• Lower optical budget than LR4

 QSFP-40G-ER4

Type: Extended reach SMF
Reach: up to 40 km

Compatibility:

• Used for metro / long-distance links
• Interoperable with ER4 ecosystem
• Supports 40GE / OTU3 signals

 QSFP-4X10G-LR-S

Type: Breakout (SMF)
Reach: up to 10 km

Compatibility:

• Converts 1×40G → 4×10G LR
• Interoperates with:
  • 10GBASE-LR
  • SFP+ LR optics
• Requires breakout cable

Cisco QSFP 40G Module Price in Bangladesh

Typical Cisco 40G QSFP module prices in Bangladesh start around ৳35,000+ depending on model and specification.

•  Contact Datacom Technologies BD for updated pricing and availability.

Common Use Cases

• Data center networking
• Enterprise core and aggregation networks
• Cloud and hyperscale infrastructure
• ISP and telecom backbone
• High-performance computing (HPC)

Why Choose Cisco QSFP 40G Module?

• Proven and reliable Cisco optical technology
• High bandwidth with scalable deployment
• Flexible breakout for network optimization
• Compatible with a wide range of Cisco devices
• Ideal for mission-critical networking environments

Order Cisco QSFP 40G Module in Bangladesh

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