540-BCDK Dell Connectx-5 100GB QSFP28 PCI-Express 1 Port Network Adapter

Dell 540-BCDK Mellanox ConnectX-5 100Gb Network Adapter

High-Performance Enterprise Networking Solution

The Dell 540-BCDK Mellanox ConnectX-5 is a next-generation high-speed network interface card designed for demanding data center, cloud, and enterprise environments. Engineered for ultra-low latency and exceptional throughput, this 100 Gigabit Ethernet adapter enhances server connectivity and accelerates data-intensive workloads.

Key Highlights of Dell 540-BCDK Adapter

• Manufacturer: Dell
• Part Number: 540-BCDK
• Product Category: High-Speed Network Interface Card (NIC)
• Speed Capability: Up to 100 Gigabit Ethernet / InfiniBand
• Connector Type: QSFP28 single-port configuration

Advanced Technical Architecture

Hardware Design and Form Factor

Built as a plug-in expansion card, this adapter follows a robust enterprise-grade design optimized for PCI Express-based server environments, ensuring stable and scalable network performance.

Interface and Bus Compatibility

• PCI Express 3.0 x16 interface for maximum bandwidth utilization
• Backward compatibility with PCIe 1.1, 2.0, and 3.0 standards
• Optimized for high-throughput server architectures

Network Performance and Connectivity Features

Multi-Speed Data Link Support

• Gigabit Ethernet (1GbE)
• 10 Gigabit Ethernet (10GbE)
• 25 Gigabit Ethernet (25GbE)
• 40 Gigabit Ethernet (40GbE)
• 50 Gigabit Ethernet (50GbE)
• 100 Gigabit Ethernet (100GbE)
• 100 Gigabit InfiniBand support

High-Speed Data Transfer Capability

Delivers ultra-fast data transfer rates of up to 100 Gbps, enabling seamless handling of virtualization, cloud computing, AI workloads, and high-performance storage systems.

Supported Protocols and Networking Technologies

Transport and Communication Protocols

• TCP/IP for reliable network communication
• UDP/IP for low-latency transmission
• iSCSI for storage networking integration

Industry Compliance and Standards

• IEEE 802.1Q VLAN tagging
• IEEE 802.1p traffic prioritization
• IEEE 802.3ad link aggregation (LACP)
• IEEE 802.3ba, 802.3bj, 802.3bm, 802.3by high-speed Ethernet standards
• IEEE 1588v2 precision time protocol support
• IBTA 1.3 InfiniBand specification compliance
• Advanced QoS and congestion management standards (802.1qaz, 802.1qbb, 802.1qau)

Optimized Use Cases and Deployment Scenarios

Ideal Applications

• Enterprise data centers requiring ultra-fast networking
• Cloud infrastructure and hyperscale environments
• High-performance computing (HPC) clusters
• AI/ML training and big data analytics workloads
• Storage area networks (SAN) and virtualization platforms

Performance Benefits

• Reduced latency for real-time applications
• Improved bandwidth efficiency for large-scale data transfer
• Enhanced scalability for modern server infrastructures
• Optimized throughput for distributed computing environments

Enterprise-Grade Reliability and Scalability

System Integration Advantages

• Seamless integration with Dell server ecosystems
• Support for modern virtualization and containerized environments
• Efficient load balancing across network interfaces

Scalability Features

• Designed for large-scale deployment in enterprise networks
• Supports evolving data center bandwidth requirements
• Future-ready architecture for next-generation workloads

Dell 540-BCDK 100GB QSFP28 PCI-Express Network Adapter

The Dell 540-BCDK Mellanox ConnectX-5 100GB QSFP28 PCI-Express 1 Port Network Adapter represents a high-performance networking solution engineered for modern data centers, enterprise servers, cloud infrastructures, and high-performance computing (HPC) environments. Built on advanced Mellanox ConnectX-5 technology and distributed through Dell’s enterprise hardware ecosystem, this network interface card (NIC) delivers ultra-low latency, massive throughput, and highly optimized workload acceleration capabilities. Designed to support 100 Gigabit Ethernet (100GbE) speeds, this adapter is ideal for organizations seeking scalable, reliable, and future-ready network infrastructure.

Enterprise-Grade High-Speed Networking Architecture

At the core of this network adapter is the Mellanox ConnectX-5 architecture, a widely adopted generation of smart NIC technology designed to handle the most demanding workloads in data-intensive environments. The adapter is optimized for 100GbE connectivity using QSFP28 transceiver interfaces, enabling seamless integration into high-bandwidth switching environments. With PCI Express Gen3/Gen4 compatibility (depending on system configuration), the adapter ensures efficient data flow between the server CPU and network fabric while minimizing bottlenecks.

The integration of advanced offloading engines reduces CPU overhead significantly by handling tasks such as packet processing, encryption, and virtualization network functions directly on the NIC. This results in improved system efficiency and better utilization of compute resources across distributed environments.

100GbE QSFP28 Interface Capabilities

The QSFP28 interface is a key component of this adapter’s performance profile. It supports 4x25Gbps lanes aggregated into a single 100Gbps channel, enabling ultra-fast data transmission between servers, storage systems, and network switches. This high-bandwidth capability makes it suitable for data-heavy applications such as cloud computing, big data analytics, machine learning workloads, and real-time financial transactions.

Key QSFP28 Advantages

The QSFP28 interface ensures scalability, flexibility, and high compatibility across data center environments. It supports a wide range of optical and direct-attach copper (DAC) cables, allowing administrators to choose cost-effective or long-distance connectivity solutions based on infrastructure needs. The hot-pluggable nature of QSFP28 modules also ensures minimal downtime during upgrades or maintenance.

Advanced Mellanox ConnectX-5 Technology Integration

Developed by Mellanox Technologies, now part of, the ConnectX-5 family is recognized for its advanced network processing capabilities and industry-leading throughput performance. The Dell 540-BCDK leverages this architecture to deliver hardware acceleration for various networking protocols and virtualization frameworks.

The ConnectX-5 design supports advanced offloads including RDMA over Converged Ethernet (RoCE), TCP/UDP stateless offloads, and virtualization acceleration features that significantly improve data throughput and reduce latency in multi-tenant environments.

RDMA and Low-Latency Communication

Remote Direct Memory Access (RDMA) is one of the standout features supported by this adapter. RDMA allows direct memory-to-memory communication between servers without involving the CPU, drastically reducing latency and improving throughput. This is particularly beneficial for high-performance computing clusters, storage replication systems, and real-time analytics platforms.

RoCE (RDMA over Converged Ethernet)

RoCE enables RDMA functionality over standard Ethernet networks, combining the flexibility of Ethernet with the performance of RDMA. This makes it easier for enterprises to deploy high-speed interconnects without requiring specialized InfiniBand infrastructure. The Dell 540-BCDK adapter ensures efficient RoCE implementation with congestion control and lossless Ethernet support.

PCI Express Interface and System Integration

The adapter utilizes a PCI Express interface to connect directly to server motherboards, ensuring maximum throughput and minimal latency. PCIe lanes provide a dedicated high-speed communication path between the NIC and system CPU, which is essential for handling 100GbE traffic loads.

Scalability Across Server Architectures

Designed for compatibility with modern Dell PowerEdge servers and other enterprise-grade systems, the adapter integrates seamlessly into both rack-mounted and blade server configurations. Its flexible design ensures compatibility across multiple generations of server hardware, making it a versatile choice for infrastructure upgrades and expansions.

Efficient Lane Utilization

The PCIe interface ensures optimal utilization of available lanes, reducing bottlenecks and enabling sustained high-throughput performance. This is critical for workloads involving large-scale virtualization, containerized applications, and distributed storage systems.

Virtualization and Cloud Optimization Features

The Dell 540-BCDK Mellanox ConnectX-5 adapter is optimized for virtualized environments, supporting technologies such as SR-IOV (Single Root Input/Output Virtualization), which allows a single physical NIC to be partitioned into multiple virtual functions. This enables efficient network resource sharing across virtual machines (VMs) and containers.

SR-IOV and Multi-Tenant Environments

SR-IOV reduces virtualization overhead by allowing direct hardware access to virtual machines. This improves performance and reduces CPU utilization, making it ideal for cloud service providers and enterprise virtualization platforms such as VMware, OpenStack, and Kubernetes-based environments.

Network Function Offloading

The adapter offloads network processing tasks such as packet filtering, checksum calculations, and encryption to the hardware layer. This ensures that virtualized workloads can operate at near-native speeds without compromising network performance.

High-Performance Computing (HPC) Applications

In HPC environments, the demand for low latency and high throughput is critical. The Dell 540-BCDK ConnectX-5 adapter is engineered to meet these requirements by enabling ultra-fast data exchange between compute nodes. It supports parallel processing workloads commonly found in scientific simulations, financial modeling, and AI training environments.

AI and Machine Learning Workloads

Artificial intelligence and machine learning workloads require massive data movement across GPU clusters and distributed systems. With 100GbE connectivity, this network adapter ensures rapid synchronization of datasets, model parameters, and training outputs, significantly reducing training time in large-scale AI models.

GPU Cluster Networking

The adapter integrates efficiently with GPU-accelerated systems, enabling high-speed communication between nodes equipped with PowerEdge servers and NVIDIA GPU platforms. This makes it ideal for deep learning frameworks such as TensorFlow and PyTorch operating at scale.

Data Center Efficiency and Scalability

Modern data centers require highly efficient networking components that can scale with increasing workloads. The Dell 540-BCDK adapter provides energy-efficient operation while maintaining high throughput, reducing the overall total cost of ownership (TCO) for enterprise deployments.

Power Efficiency and Thermal Optimization

Despite its high performance, the adapter is designed with power efficiency in mind. Advanced power management features dynamically adjust performance states based on workload demand, reducing energy consumption during low-traffic periods.

Cooling and Heat Dissipation

Efficient thermal design ensures stable performance even under sustained high-load conditions. This is particularly important in dense server racks where multiple high-performance NICs operate simultaneously.

Security and Network Protection Features

Security is a key consideration in enterprise networking. The ConnectX-5 architecture includes built-in hardware acceleration for encryption and secure data transmission. This helps protect sensitive data in transit without introducing significant latency.

Encryption Offloading

By offloading encryption tasks to the NIC, the adapter reduces CPU overhead while maintaining secure communication channels. This is essential for compliance with enterprise security standards and regulatory frameworks.

Isolation in Multi-Tenant Systems

In cloud environments, secure isolation between tenants is critical. SR-IOV and virtualization features ensure that network traffic remains segmented and secure across virtual machines.

Compatibility with Modern Network Ecosystems

The Dell 540-BCDK Mellanox ConnectX-5 adapter is compatible with a wide range of operating systems, virtualization platforms, and network switches. It supports Linux distributions, Windows Server environments, and cloud orchestration systems.

Integration with Software-Defined Networking (SDN)

Software-defined networking platforms benefit significantly from the programmability of ConnectX-5 adapters. The ability to dynamically manage traffic flows, bandwidth allocation, and routing policies enhances overall network efficiency.

Open Networking Support

The adapter supports open networking standards, enabling interoperability with multi-vendor network environments. This reduces vendor lock-in and allows enterprises to build flexible infrastructure architectures.

Use Cases Across Industries

The Dell 540-BCDK Mellanox ConnectX-5 100GbE adapter is widely used across multiple industries, including cloud service providers, financial institutions, research laboratories, and telecommunications companies.

Cloud Infrastructure Providers

Cloud providers rely on high-speed networking to ensure low-latency access to compute and storage resources. This adapter enables efficient scaling of cloud workloads across distributed data centers.

Financial Trading Systems

In high-frequency trading environments, microsecond-level latency improvements can have a significant impact. The adapter’s low-latency design ensures faster transaction processing and data exchange between trading systems.

Telecommunications Networks

Telecom operators utilize this NIC for handling large-scale data traffic, including 5G backhaul networks and edge computing applications. Its high throughput capabilities ensure uninterrupted service delivery.