JG661A HPE X140 40G QSFP+ Lc Lr4 Sm 1310Nm Transceiver

Overview of HPE JG661A X140 40G QSFP Transceiver

The HPE JG661A X140 40G QSFP+ LC LR4 SM 1310nm Transceiver is a high-performance optical networking module engineered for organizations that require reliable 40 Gigabit Ethernet connectivity across long-distance single-mode fiber infrastructures. Designed to support demanding enterprise, cloud, service provider, and data center environments, this plug-in transceiver delivers exceptional bandwidth, stable optical performance, and dependable long-range communication.

General Information

• Manufacturer: HPE
• Part Number: JG661A
• Product Type: QSFP+ Optical Transceiver Module

Technical Specifications

• Connectivity Technology: Wired
• Ethernet Standard: 40GBASE-LR4
• Data Transfer Rate: 40 Gigabit Ethernet
• Optical Wavelength: 1310nm
• Fiber Type: Single-Mode Fiber (SMF)
• Connector Type: LC Duplex
• Maximum Transmission Distance: Up to 10 km (Approximately 6.2 Miles)

Expansion Interface

• 1 × 40GBASE-LR4 Ethernet Interface
• QSFP+ Plug-in Optical Module

1310nm Optical Wavelength Benefits

• Stable optical performance
• Efficient long-range transmission
• Lower signal attenuation
• Enhanced network reliability
• Consistent communication quality

Major Features

• Supports 40 Gigabit Ethernet connectivity
• Industry-standard QSFP+ interface
• 1310nm optical transmission
• LC duplex fiber connector
• Single-mode fiber compatibility
• Long-distance communication up to 10 km
• Reliable wired networking technology
• Compact plug-in installation
• High-density deployment capability
• Enterprise-grade optical performance

Compatibility

• HP 5900AF-48XG-4QSFP F-bundle
• HP 5900AF-48XG- 

Expansion and Connectivity Options

• Interfaces: 1 x Ethernet 40GBASE-LR4

Overview of HPE JG661A X140 40G QSFP Transceiver

The HPE JG661A X140 40G QSFP+ LC LR4 SM 1310Nm Transceiver is a high-performance optical module designed to deliver reliable connectivity for enterprise networking environments. This transceiver is engineered to support 40 Gigabit Ethernet applications, offering exceptional speed, efficiency, and compatibility with Hewlett Packard Enterprise networking equipment. Its QSFP+ form factor ensures compact integration, while the LR4 specification allows for long-range transmission over single-mode fiber at the 1310nm wavelength. This makes it an ideal solution for data centers, cloud infrastructures, and enterprise backbones that demand robust and scalable connectivity.

Built for High-Speed 40 Gigabit Ethernet Networks

Modern IT infrastructures require networking components capable of handling increasing traffic volumes without sacrificing reliability. The HPE JG661A QSFP+ transceiver enables consistent 40GbE performance, making it suitable for organizations migrating from 10 Gigabit environments to higher-capacity network architectures.

Whether deployed in enterprise core switches, aggregation layers, virtualization platforms, or cloud computing environments, this optical module provides the bandwidth needed for bandwidth-intensive workloads, high-volume storage traffic, virtualization, and business-critical applications.

Reliable 40GBASE-LR4 Optical Technology

The 40GBASE-LR4 optical standard enables long-distance Ethernet communication over single-mode fiber while maintaining signal integrity and low latency. By utilizing multiple optical wavelengths centered around 1310nm, the module efficiently transmits 40 Gigabit Ethernet traffic across long fiber links without compromising network stability.

This optical technology supports scalable infrastructures where consistent performance and minimal packet loss are essential for uninterrupted business operations.

Extended Transmission Range

Unlike multimode optical solutions that focus on short-distance deployments, single-mode fiber allows significantly longer communication distances. The HPE JG661A supports transmission distances reaching approximately 10 kilometers, making it suitable for connecting separate buildings, campus environments, and geographically distributed facilities

Form Factor and Interface

The QSFP+ form factor of the HPE JG661A transceiver is designed to maximize port density while minimizing space requirements. Its LC connector interface ensures compatibility with widely used fiber optic cabling standards. This combination allows network administrators to deploy high-speed connections without compromising on space efficiency or ease of installation.

Transmission Distance and Wavelength

Operating at the 1310nm wavelength, the LR4 specification enables the transceiver to achieve transmission distances of up to 10 kilometers over single-mode fiber. This makes it suitable for connecting data centers across campuses or metropolitan areas, ensuring seamless communication between critical infrastructure points.

Data Rate and Performance

Supporting a data rate of 40Gbps, the HPE JG661A transceiver is optimized for high-bandwidth applications. This performance level is essential for modern enterprises that rely on virtualization, cloud computing, and big data analytics. By delivering consistent throughput, the transceiver ensures that applications run smoothly without bottlenecks.

Data Center Connectivity

In data centers, the HPE JG661A transceiver plays a critical role in linking servers, storage systems, and switches. Its ability to support long-range transmission makes it ideal for connecting different sections of a large-scale facility. This ensures that workloads are distributed efficiently and that resources are accessible across the entire infrastructure.

Enterprise Networking

Enterprises benefit from the transceiver’s high-speed capabilities when deploying backbone networks. By integrating the HPE JG661A into their infrastructure, organizations can support bandwidth-intensive applications such as video conferencing, unified communications, and enterprise resource planning systems. This enhances productivity and ensures reliable communication across departments.

Reliability and Stability

Hewlett Packard Enterprise designs its transceivers with reliability in mind. The HPE JG661A offers stable performance under demanding conditions, ensuring that networks remain operational without interruptions. This reliability is crucial for mission-critical applications where downtime can result in significant losses.

Compatibility with HPE Equipment

The transceiver is fully compatible with HPE switches and networking devices, ensuring seamless integration into existing infrastructures. This compatibility reduces the complexity of deployment and guarantees that organizations can leverage the full potential of their HPE networking solutions.

Scalability for Future Growth

As enterprises grow, their networking needs evolve. The HPE JG661A transceiver supports scalability by providing high-speed connections that can accommodate increasing data demands. This future-proof design ensures that organizations can expand their networks without needing to replace existing hardware.

QSFP+ Transceiver Technology

QSFP+ transceivers are widely used in modern networking environments due to their compact design and ability to support high data rates. The HPE JG661A exemplifies this technology by delivering 40Gbps connections in a small form factor. This allows network administrators to maximize port density, which is especially valuable in data centers where space is at a premium.

Single-Mode Fiber Applications

Single-mode fiber is the preferred medium for long-distance transmission due to its low attenuation and high bandwidth capabilities. The HPE JG661A transceiver leverages single-mode fiber to achieve distances of up to 10 kilometers, making it suitable for metropolitan area networks and campus-wide deployments.

1310nm Wavelength Benefits

Operating at the 1310nm wavelength provides several advantages, including reduced signal loss and improved transmission quality. This wavelength is commonly used in long-range optical communication, ensuring that the HPE JG661A transceiver delivers consistent performance over extended distances.

Campus Networks

Universities and large organizations often require connectivity across multiple buildings. The HPE JG661A transceiver supports these scenarios by enabling long-range connections over single-mode fiber. This ensures that students, faculty, and employees have access to reliable network resources regardless of their location on campus.

Metropolitan Area Networks

In metropolitan areas, service providers and enterprises need to connect facilities spread across the city. The HPE JG661A transceiver’s LR4 specification makes it suitable for these applications, providing high-speed connections that span several kilometers without signal degradation.

Ensuring Longevity

Proper maintenance practices, such as cleaning fiber connectors and monitoring environmental conditions, can extend the lifespan of the HPE JG661A transceiver. By following these practices, organizations can maximize their investment and ensure reliable performance over time.

Firmware Updates

HPE periodically releases firmware updates to enhance the functionality and compatibility of its transceivers. Keeping the HPE JG661A transceiver updated ensures that it remains aligned with the latest networking standards and security protocols.

40G vs 100G Transceivers

While 100G transceivers offer higher data rates, 40G transceivers like the HPE JG661A remain relevant due to their balance of performance and cost-effectiveness. Organizations can deploy 40G transceivers to meet current demands while planning for future upgrades to 100G solutions.