D-Link 40G QSFP+ Transceiver in Bangladesh — High-Speed 40G Network Connectivity

A D-Link 40G QSFP+ Transceiver is a high-performance optical module designed for 40 Gigabit Ethernet networking. It delivers fast, reliable, and low-latency connectivity for enterprise networks, data centers, and ISP infrastructure.

D-Link QSFP+ modules support 4×10Gbps lanes (40Gbps total) and comply with IEEE 802.3ba standards for high-speed networking.

Buy D-Link 40G QSFP+ Transceiver in Bangladesh

Datacom Technologies BD offers:

• 100% genuine D-Link-compatible QSFP+ modules
• Support for SR4, LR4, ER4, DAC, AOC variants
• Competitive pricing in Bangladesh
• Compatibility support for D-Link switches
• Technical consultation & deployment support

Why Choose D-Link 40G QSFP+ Transceiver?

• ✔ 40Gbps high-speed data transmission
• ✔ Hot-swappable (no network downtime)
• ✔ Digital Optical Monitoring (DOM/DDM)
• ✔ MSA & IEEE 802.3ba compliant
• ✔ High-density QSFP+ form factor
• ✔ Reliable performance for enterprise & ISP networks

Types of D-Link 40G QSFP+ Transceivers

• 40GBASE-SR4 — Short range (MMF, up to 100m)
• 40GBASE-LR4 — Long range (SMF, up to 10km)
• 40GBASE-ER4 — Extended range (up to 40km)
• DAC (Direct Attach Cable) — Short distance (1m–5m)
• AOC (Active Optical Cable) — Flexible fiber connectivity

Technical Overview

Popular D-Link 40G QSFP+ Transceiver Models, Part Numbers & Server Compatibility at Datacom

DEM-QX01Q-SR4

• Type: 40GBASE-SR4
• Fiber: Multimode (MMF)
• Wavelength: 850 nm
• Distance:
  • OM3: ~100 m
  • OM4: ~150 m
• Connector: MPO/MTP
• Standards: IEEE 802.3ba, QSFP+ MSA
• Compatibility:
  • D-Link DXS/DGS series switches
  • Works with any MSA-compliant QSFP+ ports

???? Most common short-range 40G module for data centers

 DEM-QX10Q-LR4

• Type: 40GBASE-LR4
• Fiber: Single-mode (SMF)
• Wavelength: 1271–1331 nm (CWDM lanes)
• Distance: up to 10 km
• Connector: LC duplex
• Standards: IEEE 802.3ba
• Compatibility:
  • D-Link aggregation/core switches
  • Interoperable with standard QSFP+ LR4 optics

???? Standard long-distance enterprise optic

 DEM-QX Series (General Family)

• Includes Models:
  • DEM-QX01Q-SR4
  • DEM-QX10Q-LR4
• Features:
  • Hot-pluggable QSFP+ modules
  • 40 Gbps data rate
  • Supports both MMF and SMF options
• Compatibility:
  • D-Link enterprise switches
  • Fully compliant with MSA + IEEE 802.3ba

???? Official D-Link 40G QSFP+ transceiver family

 DEM-QX01Q-SR4 (3rd-party / coded versions)

• Type: 40GBASE-SR4
• Distance: up to 100–150 m MMF
• Compatibility:
  • Encoded for D-Link switches
  • Works with Cisco, MikroTik, Ubiquiti (MSA compliant)

???? Common cost-effective alternative

 DEM-QX10Q-LR4 (3rd-party compatible)

• Type: 40GBASE-LR4
• Distance: 10 km SMF
• Compatibility:
  • Multi-vendor interoperability
  • Requires proper vendor coding for strict switches

???? Widely used in mixed-vendor networks

 DEM-CB100QXS (40G QSFP+ DAC Cable)

• Type: Direct Attach Copper (DAC)
• Distance: ~1 m
• Connector: QSFP+ to QSFP+
• Compatibility:
  • D-Link switches with QSFP+ ports
  • Plug-and-play short-distance solution

???? Cheapest solution for rack-to-rack connections

 DEM-CB300QXS (40G QSFP+ DAC Cable)

• Type: Passive DAC cable
• Distance: ~3 m
• Speed: 40 Gbps
• Compatibility:
  • D-Link QSFP+ switches
  • Supports high-bandwidth short links

???? Used for short interconnects in data centers

 DEM-CB100QXS-4XS (Breakout Cable)

• Type: 40G → 4×10G breakout DAC
• Connector: QSFP+ to 4×SFP+
• Compatibility:
  • D-Link switches with breakout support
  • Connects to 10G SFP+ ports

???? Cost-effective port expansion

Price in Bangladesh (2025 / 2026)

???? International reference: 40G LR4 modules available around $140+ (~15,000 BDT) depending on vendor.

•  Contact Datacom for latest price & availability.

Best Use Cases

• Enterprise network infrastructure
• Data center connectivity
• ISP & telecom backbone
• Switch-to-switch uplinks
• 40G aggregation networks

Why Buy from Datacom Technologies BD?

• Genuine D-Link-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