StarTech QSFP40SR4ST 40GBase-SR4 QSFP+ Optical Transceiver

• 40Gbps server-to-switch data centre interconnects
• High-speed switch aggregation over multi-mode fiber
• Short-range 40G backbone links within data centres
• OM3-based optical links up to 100m in facilities
• OM4-based optical links reaching up to 150m
• High-density network switch optical expansion
• Enterprise data centre aggregation infrastructure
• High-bandwidth storage and server network connectivity
• Optical uplinks between compatible 40G networking devices
• Network modernization using 40G Ethernet infrastructure
• Hot-swappable replacement for compatible QSFP+ ports
• Dense optical connectivity for scalable data centre racks

• 40Gbps 40GBase-SR4 connectivity for high-bandwidth links
• QSFP+ form factor supports high-density optical deployment
• Multi-mode fiber support suits short-range data centre links
• Up to 150m OM4 reach expands deployment flexibility
• Up to 100m OM3 reach supports common MMF infrastructure
• MPO duplex connector simplifies high-speed fiber integration
• Hot-swappable design reduces network service disruption
• High throughput supports demanding enterprise workloads
• Low-latency optical connectivity for data centre networks
• IEEE 802.3ba compliance supports 40G Ethernet deployment
• QSFP+ MSA compliance supports standardized module design
• Compact module helps optimize switch port utilization
• Suitable for server, aggregation and backbone connectivity 

• Brand: StarTech.com
• Model: QSFP40SR4ST
• Product Type: Optical Network Module
• Form Factor: QSFP+
• Network Speed: 40Gbps
• Ethernet Standard: 40GBase-SR4
• Fiber Type: Multi-mode Fiber
• Supported Fiber: OM3 / OM4
• Connector Type: MPO Duplex
• Maximum Distance on OM3: Up to 100m
• Maximum Distance on OM4: Up to 150m
• Hot-Swappable: Yes
• Standards Compliance: IEEE 802.3ba
• Interface Standard: QSFP+ MSA
• Primary Application: Optical Networking
• Deployment Environment: Data Centre / Enterprise Network
• Typical Connectivity: Server Interconnects / Aggregation / Backbone
• Port Density: High-density QSFP+ Form Factor
• Module Construction: Green PCB with Metal Cage
• Compatibility: 40GBase-SR4 QSFP+ ports using OM3/OM4 MMF

WHY CHOOSE THIS PRODUCT?

• 40Gbps network capacity: Provides a significant bandwidth path for high-volume server, aggregation and backbone traffic without requiring multiple lower-speed optical connections.
• Data-centre focused reach: OM3 support up to 100m and OM4 support up to 150m cover common short-range multi-mode fibre deployments.
• High-density QSFP+ design: The compact form factor helps network teams increase optical capacity within switches and other compatible networking platforms.
• Hot-swappable deployment: Supports module installation or replacement with less operational disruption during network maintenance.
• MPO connectivity: Provides a practical fibre interface for compatible high-speed optical infrastructure.
• Standards-based integration: IEEE 802.3ba and QSFP+ MSA compliance supports deployment within standardized 40G Ethernet environments.
• Flexible infrastructure use: Suitable for server interconnects, aggregation links and backbone connections across enterprise and data-centre networks.