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Optical Transceivers 40G QSFP+ Module Suppliers & Manufacturing

High-Density, MSA-Compliant 40G QSFP+ Transceivers engineered for Enterprise Cloud, Edge Data Centers, and Next-Gen Telecom Network Scaling.

Featured 40G QSFP+ Transceivers

Direct-from-factory high-speed interconnect solutions ensuring seamless performance, compatibility, and low latency.

40GBASE-SR4 Multimode 850nm 40G QSFP+ Transceiver Module

40GBASE-SR4 Multimode 850nm 40G QSFP+ 150m MMF Fiber Optic Transceiver Module

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Single Mode Fiber Optic Transceiver Module Duplex LC 1310nm SMF QSFP+ 40G 80km

Single Mode Fiber Optic Transceiver Module Duplex LC 1310nm SMF QSFP+ 40G 80km

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QSFP+ 40GBASE-SR BiDi 300m Multi Mode Duplex LC Optical Transceiver Module

QSFP+ 40GBASE-SR BiDi 300m Multi Mode Duplex LC Optical Transceiver Module QSFP-40G-SR-BD

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40GBASE-LR4 Duplex LC SMF Optical Transceiver Module 1310nm Single Mode 40G QSFP+ 10km

40GBASE-LR4 Duplex LC SMF Optical Transceiver Module 1310nm Single Mode 40G QSFP+ 10km

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40GBASE-ER4 Duplex LC Single Mode 1310nm QSFP+ 40km SMF Optical Transceiver Module

40GBASE-ER4 Duplex LC Single Mode 1310nm QSFP+ 40km SMF Optical Transceiver Module

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40GBASE-ZR4 SMF Optical Transceiver Module Duplex LC Single Mode 1310nm 40G QSFP+ 80km

40GBASE-ZR4 SMF Optical Transceiver Module Duplex LC Single Mode 1310nm 40G QSFP+ 80km

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40GBASE-SR4 MPO-12 Multimode Optical Transceiver MMF 850nm 40G QSFP+ Module 150m

40GBASE-SR4 MPO-12 Multimode Optical Transceiver MMF 850nm 40G QSFP+ Module 150m

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Cisco SFP-10/25G-LR-S Compatible Single Mode Dual rate 10G/25G SFP28 Module

Cisco SFP-10/25G-LR-S Compatible Single Mode Dual rate 10G/25G 1310nm SFP28 Optical Transceiver Module 10km

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About Equip-Link

Founded in 2017, Equip-Link Intelligent Equipment (Shenzhen) Co., Ltd. is a leading manufacturer and supplier of high-performance optical transceivers and fiber optic communication solutions. We specialize in the design, development, production, and global distribution of optical modules for data centers, telecommunications networks, enterprise networking, cloud computing, and AI infrastructure applications.

With 9 years of export experience and 14 years of industry expertise, our team understands the evolving demands of global communication networks. We deliver products that strictly meet international standards for compatibility, performance, and long-term durability.

Our modern manufacturing facility covers an area of 380 square meters and is equipped with advanced production and testing equipment to ensure consistent quality and reliable performance. With an annual export revenue exceeding USD 18 million, Equip-Link has established long-term partnerships with customers in more than 50 countries and regions worldwide.

14+
Years Industry Expertise
$18M+
Annual Export Revenue
68+
Professional R&D Engineers
1280+
Qualified Supply Chain Partners

40G QSFP+ Industry Trends & Technical Analysis

The telecommunications and enterprise networking landscape is undergoing a critical transition. While 100G and 400G represent the cutting edge for massive hyperscale data centers, 40G QSFP+ (Quad Small Form-factor Pluggable Plus) remains a foundation for enterprise core switches, mid-tier data centers, and metropolitan transport networks. Choosing the right 40G QSFP+ module suppliers involves understanding how these devices fit into modern leaf-spine topologies and hybrid cloud environments.

Optical Interface Versatility

From short-range MPO-12 (SR4) for low-cost patch connections up to 150m, to Duplex LC interfaces (LR4/ER4/ZR4) utilizing Coarse Wavelength Division Multiplexing (CWDM) to span up to 80km over single-mode fiber.

DDM/DOM Diagnostics

All modules include Digital Diagnostic Monitoring (DDM) according to the SFF-8636 standard, tracking real-time parameters such as optical output power, receiver input power, temperature, and supply voltage.

Backward Compatibility

QSFP+ ports provide outstanding architectural flexibility by allowing 4x10G breakout configurations. Using breakout cables, engineers can easily connect older SFP+ ports to high-density 40G distribution blocks.

Global Enterprise Procurement & Intent Analysis

Enterprise buyers and systems integrators face high stakes when selecting a 40G QSFP+ transceivers supplier. Network downtime translates directly into lost revenue. Procurement decisions focus heavily on:

  • Multi-Vendor Interoperability: Modules must match target switch brands (Cisco, Arista, Juniper, HP, Dell) seamlessly without prompting warning messages or performance bottlenecks.
  • Thermal and Power Efficiency: Low power consumption (typically less than 1.5W per 40G module) is key to keeping operational cooling costs low across high-density line cards.
  • Supply Chain Resiliency: Short lead times, OEM/ODM compatibility customization, and reliable warranty structures are non-negotiable for large-scale buildouts.

Macro-Industry Connectivity Solutions

How different industrial sectors deploy Equip-Link's high-speed optical module solutions.

Enterprise & Cloud Data Centers

Deploying 40GBASE-SR4 and BiDi transceivers to optimize switch-to-switch aggregation inside spine-leaf architectures. Facilitates high-density patch fields and reduces cabling complexity by employing multi-mode fiber runs up to 150-300m.

Metro & Service Provider Backhaul

Utilizing single-mode 40GBASE-LR4 (10km), ER4 (40km), and ZR4 (80km) transceivers to bridge remote central offices. These CWDM-based optics deliver long-haul transit capacity without requiring costly optical amplifiers.

EMI Shielded Hardware & Connectivity

Integrating press-fit SFP/QSFP cages, EMI shielded structural connectors, and magnetic RJ45 jacks inside edge compute nodes. These components prevent electromagnetic interference and maintain physical port alignment in rugged industrial settings.

Rigorous QA Control & Manufacturing Workflows

Quality is the foundation of our engineering. We run a comprehensive system featuring incoming material inspections, in-process verification, and 100% final testing.

Our Quality Assurance department features 36 experienced inspectors. Utilizing high-end testing gear, we check every optical transceiver for transmission eye patterns, optical power, spectral purity, and digital compatibility. This system ensures we maintain our status as a trusted optical transceiver supplier worldwide.

Production Process Stages:

Advanced Testing & Manufacturing Machinery:

Technical Roadmap & Compliance

As networks scale toward 400G and 800G, 40G QSFP+ transceivers remain highly relevant for edge access points and migration nodes. Equip-Link's engineering roadmap prioritizes energy efficiency and high-reliability designs. By reducing power dissipation in our optical chipsets, we help data centers lower their Power Usage Effectiveness (PUE) ratings.

Our compliance framework meets rigorous international standards, including CE, FCC, RoHS, and REACH. This alignment guarantees that our network components integrate smoothly into global projects. Our compatibility lab maintains up-to-date switches from Cisco, Juniper, Arista, and HPE to verify that every firmware patch and compatibility code works seamlessly before delivery.

Technical Q&A & Informational Insights

Frequently asked questions concerning 40G QSFP+ module engineering, deployment, and selection.

What is the difference between QSFP+ SR4 and BiDi modules?
QSFP+ SR4 utilizes an MPO/MTP-12 connector, running over 4 parallel fiber lanes in each direction. It operates on 850nm wavelengths. QSFP+ BiDi (Bidirectional), conversely, uses a duplex LC connector, transmitting two channels in both directions over a single pair of multi-mode fibers. This allows you to upgrade from 10G to 40G without replacing your existing duplex LC fiber cable infrastructure.
Can 40G QSFP+ optical transceivers connect with 10G SFP+ ports?
Yes, many 40G QSFP+ modules (such as 40GBASE-SR4 or 40GBASE-LR4 configured in breakout mode) can connect with four 10G SFP+ ports using a MPO-to-4xLC breakout cable. The switch hardware must support breakout configuration, allowing you to split a single 40G port into four distinct 10G logical ports.
What options are available for long-distance 40G transmissions?
For links up to 10km, 40GBASE-LR4 over single-mode fiber is standard. For longer distances, you can deploy 40GBASE-ER4 (up to 40km) or 40GBASE-ZR4 (up to 80km). These modules utilize coarse wavelength division multiplexing (CWDM) to aggregate four 10G channels onto a single optical path.
How does Equip-Link handle compatibility with Cisco and other brands?
Our R&D team programs the EEPROM of each module with compatible configuration data. This ensures it emulates the original vendor’s signature. During production, we run the modules through actual switches in our lab to verify they bypass compatibility lockouts and report diagnostic stats correctly.

EMI Shielded cages, Connectors & SFP Modules

Critical infrastructure hardware, EMI shielding, and RJ45 modular accessories for reliable deployments.

China Supplier J1N-0003NL Female Multiple Port RJ45 Connectors

China Supplier J1N-0003NL Female Multiple Port RJ45 Connectors

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2110742-1 TE Compatible Through Hole EMI Shielded 1x6 Ports Press-Fit SFP+ Cage With Light Pipe

2110742-1 TE Compatible Through Hole EMI Shielded 1x6 Ports Press-Fit SFP+ Cage With Light Pipe

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45F-10101DYD2NL JW0-0009NL C893-1AX1-E1 Magnetic RJ45 Connector Jack With Dual USB

45F-10101DYD2NL JW0-0009NL C893-1AX1-E1 Magnetic RJ45 Connector Jack With Dual USB

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RJ 45 Female Ethernet Magnetic RJ45 Connector Jack Tyco 1-6605759-1

RJ 45 Female Ethernet Magnetic RJ45 Connector Jack Tyco 1-6605759-1

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2227303-1 TE Replacement Single Port EMI Shielded THT Soldering SFP Cage Assembly

2227303-1 TE Replacement Single Port EMI Shielded THT Soldering SFP Cage Assembly

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Multi Mode Fiber Optic Equipment 850nm Transceiver Module Sfp-10g-sr 300m

Multi Mode Fiber Optic Equipment 850nm Transceiver Module Sfp-10g-sr 300m

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2007492-6 TE Compatible Through Hole 40P Press-Fit 2x1 Ports EMI Shielded SFP+ Cage With Connector

2007492-6 TE Compatible Through Hole 40P Press-Fit 2x1 Ports EMI Shielded SFP+ Cage With Connector

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MIC24U1C-6131W-LF3 RU3-261A1D11 RC-122C09-015 RJ45 Magjack Connector With Single USB

MIC24U1C-6131W-LF3 RU3-261A1D11 RC-122C09-015 RJ45 Magjack Connector With Single USB

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All 40G QSFP+ Module Products