407-BCDH Dell 100Gbe QSFP28 LR4 LC Gen3 Hot-pluggable Optical Transceiver

Overview of DELL 407-BCDH 100GbE QSFP28 Transceiver 

The DELL 407-BCDH QSFP28 LR4 optical transceiver is designed to deliver high-speed, long-distance fiber connectivity for modern enterprise and data center networks. Built to support 100 Gigabit Ethernet performance, this hot-pluggable module extends network reach over single-mode fiber while maintaining stable, reliable data transmission. Its compact QSFP28 form factor allows seamless integration into compatible Dell PowerSwitch platforms, ensuring scalability and efficiency across evolving network infrastructures.

General Information

• Manufacturer: Dell 
• Part Number: 407-BCDH
• Product Type: Networking Transceiver

Technical Specifications

• Supports 100 Gigabit Ethernet data rates
• Designed for long-distance transmission up to 10 km
• Optimized for single-mode fiber (SMF)
• LR4 technology for enhanced signal stability
• Efficient optical wavelength operation up to 1309 nm

Physical and Interface 

• QSFP28 compact and space-saving footprint
• Hot-pluggable for simplified maintenance
• Duplex LC optical connector
• Optimized for dense networking environments

Broad Compatibility with Dell PowerSwitch Platforms

Supported Dell PowerSwitch Models

• PowerSwitch E3200-ON Series
• PowerSwitch N3200-ON
• PowerSwitch S3248T-ON
• PowerSwitch S4112-ON
• PowerSwitch S4128
• PowerSwitch S4148
• PowerSwitch S4148U-ON
• PowerSwitch S4300-ON
• PowerSwitch S5212F-ON
• PowerSwitch S5224F-ON
• PowerSwitch S5232F-ON
• PowerSwitch S5248F-ON
• PowerSwitch S5296F-ON
• PowerSwitch S5448F-ON
• PowerSwitch S6100-ON
• PowerSwitch Z9100-ON
• PowerSwitch Z9264F-ON
• PowerSwitch Z9332F-ON
• PowerSwitch Z9432F-ON
• PowerSwitch Z9664F-ON

The Dell 407-BCDH 100Gbe QSFP28 LR4 100GbE Transceivers

The Dell 407-BCDH 100GbE QSFP28 optical transceiver belongs to the advanced category of high-speed networking modules engineered for modern enterprise infrastructures, hyperscale data centers, and service provider backbones. This category focuses on reliable, long-reach, and standards-compliant 100 Gigabit Ethernet transceivers that support mission-critical workloads, scalable architectures, and bandwidth-intensive applications. Designed around the QSFP28 form factor, these transceivers provide a balance of compact density, power efficiency, and interoperability across a wide range of Dell networking platforms.100GbE QSFP28 LR4 optical modules are purpose-built for single-mode fiber deployments where extended distance, signal integrity, and consistent throughput are mandatory. The Dell 407-BCDH Gen3 transceiver exemplifies this category by offering a reach of up to 10 kilometers over SMF using LC duplex connectors, making it suitable for inter-building links, campus networks, metro aggregation, and data center interconnect scenarios.

QSFP28 Form Factor and 100GbE Architecture

QSFP28 (Quad Small Form-factor Pluggable 28) technology represents a critical evolution in Ethernet optics, enabling 100Gbps data rates within a compact and hot-pluggable design. This category of transceivers supports four parallel lanes of 25Gbps, either electrically or optically multiplexed, to achieve a total line rate of 100GbE. In LR4 implementations, wavelength division multiplexing (WDM) is used to transmit four distinct wavelengths over a single pair of single-mode fibers.

Compact Density and Port Scalability

One of the defining attributes of QSFP28-based transceivers is their ability to maximize port density on switches, routers, and network interface cards. Compared to older CFP or CFP2 modules, QSFP28 optics occupy significantly less front-panel space, enabling network architects to design high-capacity systems without increasing rack footprint. This makes the category ideal for environments where scalability and space optimization are key considerations.

Electrical and Optical Lane Design

Within the 100GbE LR4 category, each transceiver integrates four optical lanes operating around the 1310nm wavelength range. These lanes are multiplexed onto a single SMF pair, reducing fiber requirements while maintaining high throughput. Advanced digital signal processing and laser control ensure stable performance across temperature variations and long distances.

High-Performance 100GbE Fiber Connectivity

This 100GbE QSFP28 transceiver enables long-range optical communication over single-mode fiber, supporting distances of up to 10 kilometers. Utilizing LR4 technology and an optimized optical wavelength around 1309 nm, it ensures consistent signal integrity for demanding workloads such as cloud computing, virtualization, storage networking, and high-performance computing environments.

QSFP28 Hot-Pluggable Form Factor

The QSFP28 small form-factor pluggable design allows for quick installation and replacement without disrupting network operations. Hot-swappable functionality minimizes downtime, making it ideal for enterprise networks that demand high availability and continuous uptime. The duplex LC connector ensures secure and precise fiber connections for optimal optical performance.

LR4 Technology and 10km Single-Mode Fiber

LR4 transceivers are specifically designed for long-reach Ethernet applications, supporting distances up to 10 kilometers over standard single-mode fiber. This subcategory is widely adopted in enterprise campus backbones, data center interconnects, and metropolitan area networks where multimode fiber limitations are insufficient.

Wavelength Division Multiplexing Advantages

By leveraging coarse wavelength division multiplexing (CWDM), LR4 modules transmit four wavelengths simultaneously over a single fiber pair. This approach minimizes cabling complexity while preserving signal quality. The Dell 407-BCDH optical transceiver aligns with IEEE 802.3ba standards, ensuring interoperability with compliant network equipment and optical infrastructure.

Optimized for Long-Haul Signal Integrity

Advanced optical components within this category are engineered to maintain low bit error rates and stable optical output across extended distances. Features such as precise laser tuning, high-quality photodiodes, and integrated monitoring contribute to consistent performance even in demanding network environments.

Hot-Pluggable Design and Operational Flexibility

Hot-pluggable capability is a core requirement in modern networking hardware, and this category of Dell optical transceivers fully supports it. Network administrators can install, replace, or upgrade modules without powering down switches or disrupting live traffic, significantly reducing maintenance windows and operational risk.

Plug-and-Play Compatibility

This category emphasizes ease of deployment through plug-and-play functionality. Once inserted into a compatible Dell switch or network adapter, the transceiver is automatically recognized, configured, and monitored via system firmware and network management tools.

Gen3 Enhancements and Performance Optimization

Gen3 optical transceivers represent an evolution in component integration, power efficiency, and thermal management. Compared to earlier generations, this category delivers improved signal stability, lower power consumption, and enhanced diagnostics, making it well-suited for high-density deployments.

Improved Power Efficiency

Energy efficiency is a critical factor in large-scale networks. Gen3 QSFP28 LR4 modules are optimized to operate within tight power envelopes while delivering full 100GbE throughput. Reduced power draw translates into lower heat output and improved overall system efficiency.

Reliable Optical Transceiver for Scalable Networks

With its combination of 100GbE speed, long-distance reach, real-time diagnostics, and extensive compatibility, the DELL 407-BCDH QSFP28 LR4 transceiver is a dependable solution for organizations seeking to expand bandwidth while maintaining network efficiency, stability, and future-ready scalability.

LC Connector Interface and Fiber Compatibility

The LC duplex connector is widely adopted in single-mode fiber deployments due to its compact size, ease of handling, and secure connection. The Dell 407-BCDH QSFP28 LR4 transceiver uses an LC interface, ensuring compatibility with existing SMF cabling systems and patch panels.

Seamless Integration with SMF Networks

Single-mode fiber is the preferred medium for long-distance and high-speed optical communication. This category of transceivers is engineered to work optimally with standard SMF, enabling consistent performance across enterprise, campus, and metro network architectures.

Consistent Performance Across Dell Platforms

From top-of-rack switches to core routing platforms, this category of transceivers delivers uniform performance characteristics. Network architects can standardize on a single optics type for multiple deployment scenarios, simplifying design and inventory management.