Sidebar Sidebar Sidebar

StarTech. com QSFP-40G-SR4-S-ST Cisco Compatible QSFP+ Transceiver - 40GBASE-SR4 40GbE Multimode Fiber MPO 850nm

SKU: QSFP-40G-SR4-S-ST
UPC: 0065030886369
(No reviews) Write a Review
MSRP: $69.99
$70.95
$56.95
Save: $13.04 (18.38%)
Warranty Information: Lifetime
Condition: New
Width: 1.23 (cm)
Height: 1.23 (cm)
Depth: 1.23 (cm)
Availability: Canadian Inventory: Out of Stock
Adding to cart… The item has been added
Logo cards
B2B Pricing

Business volume discounts

IT Experts

Technical guidance

IT Configuration

Preparation & staging

Canada Stock

QC · ON · AB · BC

Product Features

Description

Product Overview

The StarTech.com QSFP-40G-SR4-S-ST is a high-performance QSFP+ transceiver module engineered for 40 Gigabit Ethernet optical networks. This MSA-compliant module delivers reliable 40 Gbps connectivity over multimode fiber, making it an essential component for data centers, enterprise backbones, and high-speed networking environments.

Designed as a Cisco-compatible alternative, this transceiver offers a cost-effective solution for expanding network capacity without compromising on performance. Its hot-pluggable design ensures easy installation and maintenance, supporting seamless integration into existing Cisco switch infrastructures for scalable network upgrades.

This section brings together practical product details such as Application/Usage, Total Number of Ports, Connector Type, Interfaces/Ports Details, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.

Optics
40GbE
Link Speed
MPOOptical Fiber
Module Format & Speed
Module TypeQSFP+
Network Technology40GBASE-SR4
Ethernet Speed40 Gigabit Ethernet
Fiber & Connector
Connector TypeMPO
Fiber ModeMulti-mode
Wavelength850nm
Compatibility & Standards
CompatibilityMSA Compliant
Environmental ComplianceRoHS, REACH, WEEE

Technical Overview

This transceiver operates on the 40GBASE-SR4 standard, utilizing four parallel 10 Gbps lanes to achieve an aggregate bandwidth of 40 Gbps. It employs an 850nm wavelength laser optimized for multimode fiber, ensuring efficient data transmission over short to medium distances typical in campus and data center applications.

The module features a single MPO connector interface, which consolidates the four transmit and four receive channels into a compact, high-density form factor. This design minimizes cable clutter while maximizing port utilization in network switches and routers.

This section brings together practical product details such as Application/Usage, Total Number of Ports, Connector Type, Interfaces/Ports Details, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.

Port Count1
Wavelength850nm
Fiber ModeMultimode
QSFP+ Form FactorMPO Connector40 Gbps Speed

Key Product Advantages

This transceiver stands out for its robust compatibility and environmental compliance, offering a reliable networking solution that meets modern enterprise demands.

Cisco Compatibility

Engineered to work seamlessly with a wide range of Cisco switches, including Firepower, ASR9000, ASR1000, C9300, and NCS5500 series, ensuring interoperability and reducing deployment risks.

  • Tested for Cisco switch compatibility
  • Supports various Cisco switch models

Environmental Responsibility

Manufactured in compliance with RoHS, REACH, and WEEE directives, this module meets stringent environmental standards for hazardous substance restriction and electronic waste management.

  • RoHS compliant
  • REACH and WEEE compliant

Deployment / Use Cases

Ideal for data center interconnects, this transceiver facilitates high-speed links between switches, routers, and servers, supporting bandwidth-intensive applications like virtualization, cloud computing, and big data analytics.

In enterprise networks, it enables backbone upgrades for campus environments, connecting distribution layers to core switches with 40 Gbps throughput. This capacity is crucial for supporting growing user demands, video conferencing, and collaborative tools without network bottlenecks.

Data Center Applications

Deploy in spine-leaf architectures for low-latency, high-bandwidth connections between top-of-rack switches and aggregation layers, optimizing data flow in virtualized environments.

Enterprise Backbone

Use to upgrade network cores in large offices or campuses, providing the speed needed for modern applications while maintaining compatibility with existing Cisco infrastructure.

[custom-highlights]

Highlights

  • 100% Cisco QSFP-40G-SR4-S compatible for seamless integration with Cisco switches
  • 40GBASE-SR4 technology delivering 40 Gbps over multimode fiber
  • MPO connector supporting high-density optical connections
  • 850nm wavelength optimized for multimode fiber transmission
  • MSA compliant ensuring interoperability with standard QSFP+ ports
  • Hot-pluggable design for easy installation and maintenance
  • RoHS, REACH, and WEEE compliant for environmental safety
  • Lifetime limited warranty for long-term reliability assurance
[/custom-highlights][custom-specifications]

Specifications

Specifications
ManufacturerStarTech.com
Manufacturer Part NumberQSFP-40G-SR4-S-ST
Brand NameStarTech.com
Product NameCisco QSFP+ Module
Product TypeQSFP+
Technical Information
Application/UsageOptical Network,Data Networking
Interfaces/Ports
Total Number of Ports1
Connector TypeMPO
Interfaces/Ports Details1 x MPO 40GBase-SR4 Network
Media & Performance
Media Type SupportedOptical Fiber
Fiber Mode SupportedMulti-mode
Ethernet Technology40 Gigabit Ethernet
Network Technology40GBase-SR4
Miscellaneous
CompatibilityMSA Compliant
Country of OriginChina
Environmentally FriendlyYes
Environmental ComplianceRestriction of Hazardous Substances (RoHS),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),Waste Electrical and Electronic Equipment Directive (WEEE)
Warranty
Limited WarrantyLifetime
[/custom-specifications][custom-user-manual]

User Manual

This section contains official documentation provided by the manufacturer, including product manuals, brochures, and supplementary materials.
[/custom-user-manual][custom-faq]

FAQ

What Cisco switches is this QSFP+ transceiver compatible with?

This transceiver is designed to be 100% compatible with a wide range of Cisco switches, including models like Firepower, ASR9000, ASR1000, C9300, and NCS5500 series. It undergoes testing to ensure reliable performance and interoperability within Cisco networking environments, making it a suitable alternative for expanding network capacity without vendor lock-in.

What type of fiber and connector does this module use?

The module uses multimode optical fiber with an MPO connector. This connector type supports the 40GBASE-SR4 standard by consolidating four transmit and four receive channels into a single interface, enabling high-density 40 Gbps connections over short to medium distances typical in data center and enterprise settings.

What is the operating wavelength and speed of this transceiver?

It operates at an 850nm wavelength and delivers a speed of 40 Gbps using the 40GBASE-SR4 Ethernet technology. This wavelength is optimized for multimode fiber, ensuring efficient data transmission for high-bandwidth applications like data networking and optical network interconnects.

Is this transceiver hot-pluggable?

Yes, as a QSFP+ module, it supports hot-pluggable functionality. This allows for installation or removal without powering down the network equipment, minimizing downtime and facilitating easier maintenance and upgrades in live network environments.

What environmental standards does this product comply with?

The transceiver complies with key environmental standards including RoHS (Restriction of Hazardous Substances), REACH (Registration, Evaluation, Authorization and Restriction of Chemicals), and WEEE (Waste Electrical and Electronic Equipment Directive). These compliances ensure it meets regulations for hazardous material restrictions and electronic waste management, supporting sustainable IT practices.

What warranty is offered with this QSFP+ transceiver?

StarTech.com provides a lifetime limited warranty for this transceiver. This warranty covers defects in materials and workmanship for the product's lifetime, offering long-term assurance and reliability for network deployments, which is particularly valuable for critical infrastructure investments.

[/custom-faq]
Volume Discounts
Qty Price Available
Match Price Request

Found a lower price? Send us the link and we will do our best to match or beat it.

Request received. We will reply within 24 hours.
Fleet Network
Wholesale & B2B
Partner with Us

Looking to buy in bulk? We offer competitive pricing, dedicated support, and custom solutions for businesses of all sizes.

Volume Discounts

Tiered pricing structure designed to maximize your margins as you grow.

Dedicated Account Manager

Direct access to a specialist who understands your business needs.

Fast & Reliable Shipping

Priority processing and discounted shipping rates for bulk orders.

Request a Quote
Thank you!
Your request has been sent successfully.
StarTech. com QSFP-40G-SR4-S-ST Cisco Compatible QSFP+ Transceiver - 40GBASE-SR4 40GbE Multimode Fiber MPO 850nm
MSRP: $69.99
$70.95
$56.95
Save: $13.04 (18.38%)
Available & Ready to Ship