1990-4640 HPE Aruba Cat5e SFP Transceiver Module

HPE Aruba Cat5e SFP Transceiver Module

The 1990-4640 HPE Aruba Cat5e SFP Transceiver Module is a versatile networking solution designed to provide dependable gigabit connectivity with efficient performance for enterprise and business infrastructures.

Main Information

• Manufacturer: Hewlett Packard Enterprise
• Model Number: 1990-4640
• Product Type: Transceiver Module

Technical Specifications

Form Factor

• Compact plug-in module engineered for seamless installation and integration into compatible systems.

Networking Features

Connectivity

• Technology: Wired
• Cabling Standard: 1000BASE-T (Cat5e)
• Protocol Supported: Gigabit Ethernet (GigE)

Performance

• Data Transfer Speed: 1 Gbps
• Maximum Transmission Distance: 328 feet (100 meters)

Expansion & Compatibility

Interface Options

• 1 x Ethernet 1000BASE-T
• Connector Type: RJ-45

HPE 1990-4640 Aruba Cat5e SFP Transceiver Module Overview

The HPE 1990-4640 Aruba Cat5e SFP (Mini-GBIC) Transceiver Module belongs to a specialized category of enterprise networking components designed to deliver reliable, cost-efficient, and scalable Ethernet connectivity. This category focuses on copper-based Small Form-factor Pluggable transceivers that enable network administrators to extend Gigabit Ethernet connections over standard twisted-pair cabling. As part of the broader Aruba networking ecosystem under Hewlett Packard Enterprise, this module category emphasizes compatibility, performance stability, and simplified network expansion for modern business infrastructures.

Unlike fiber-based optical transceivers, Cat5e SFP modules are engineered to support short- to medium-range connections using widely available copper cabling. This makes the category especially valuable for organizations seeking to leverage existing structured cabling systems while still benefiting from the modular flexibility of SFP-enabled network hardware. The HPE 1990-4640 Aruba Cat5e SFP module category addresses a wide range of deployment scenarios, from access layer switching to aggregation environments where copper Ethernet remains a practical and economical choice.

Role of Cat5e SFP Modules in Enterprise Networking

Cat5e SFP transceiver modules play a critical role in enterprise networks by bridging the gap between modular switch architectures and traditional copper Ethernet infrastructure. This category enables network devices equipped with SFP slots to communicate over standard RJ-45 cabling without requiring fixed copper ports. The HPE 1990-4640 Aruba Cat5e SFP module exemplifies this role by offering a plug-and-play solution that integrates seamlessly into Aruba switches and compatible HPE networking platforms.

Within enterprise networking design, flexibility is a key requirement. Cat5e SFP modules allow IT teams to adapt port types based on evolving needs, supporting mixed environments where fiber and copper coexist. This category supports incremental network upgrades, making it possible to expand capacity or reconfigure port usage without replacing core switching hardware. As a result, organizations can optimize both capital expenditure and operational efficiency.

Integration with Aruba Switching Platforms

The HPE 1990-4640 Aruba Cat5e SFP transceiver module category is tightly aligned with Aruba’s switching portfolio. Aruba switches are widely deployed in campus networks, branch offices, and data center edge environments, and this category ensures consistent interoperability across supported platforms. The module design adheres to Aruba’s engineering standards, ensuring electrical compatibility, firmware recognition, and stable operation under sustained network loads.

By using Aruba-qualified Cat5e SFP modules, network administrators reduce the risk of interoperability issues that can arise from third-party transceivers. This category is optimized to work with Aruba operating systems and management tools, allowing centralized monitoring and simplified troubleshooting. Such integration is particularly important in enterprise environments where uptime, predictability, and vendor support are essential.

Support for Modular Network Architectures

Modern network architectures increasingly rely on modularity to support scalability and long-term growth. The HPE 1990-4640 Aruba Cat5e SFP module category aligns with this architectural approach by enabling dynamic port configuration. Instead of being locked into a fixed number of copper ports, organizations can choose how many SFP slots are populated with copper transceivers versus fiber modules.

This category supports modular growth strategies, allowing businesses to respond quickly to changes in user density, device types, or bandwidth requirements. By swapping or adding Cat5e SFP modules, network teams can adjust connectivity options without disrupting the overall switching infrastructure.

Key Characteristics of the Cat5e SFP Transceiver

The HPE 1990-4640 Aruba Cat5e SFP transceiver module category is defined by a set of technical characteristics tailored to Gigabit Ethernet over copper. These modules typically support 1000BASE-T standards, enabling data transmission at speeds up to 1 Gbps over Cat5e or better twisted-pair cabling. This performance level aligns with the requirements of access layer connectivity and many aggregation use cases.

Another defining characteristic of this category is its compliance with SFP multi-source agreement specifications. This ensures mechanical and electrical compatibility with standard SFP slots found in enterprise-grade switches. The compact Mini-GBIC form factor allows high port density while maintaining efficient airflow and thermal management within network devices.

Electrical and Signaling Considerations

Cat5e SFP modules rely on advanced signal processing to maintain data integrity over copper cabling. The HPE 1990-4640 Aruba Cat5e SFP category incorporates features such as auto-negotiation and link training to ensure optimal performance across varying cable lengths and qualities. These capabilities help mitigate issues related to signal attenuation, crosstalk, and electromagnetic interference.

Power consumption is another important aspect of this category. Compared to optical transceivers, copper-based SFP modules typically draw more power due to the complexity of electrical signaling. The HPE Aruba Cat5e SFP category is engineered to balance performance with power efficiency, ensuring compatibility with switch power budgets and thermal design constraints.

Auto-Negotiation and Duplex Support

Auto-negotiation is a core feature within this category, allowing the transceiver module to automatically determine optimal speed and duplex settings with connected devices. The HPE 1990-4640 Aruba Cat5e SFP transceiver module category supports full-duplex Gigabit Ethernet operation, enabling simultaneous data transmission and reception for improved throughput and reduced latency.

This capability simplifies deployment by reducing the need for manual configuration. Network administrators can rely on the module to establish stable links with a wide range of Ethernet-enabled devices, including servers, workstations, and network appliances.

Cable Length and Quality Requirements

The Cat5e SFP module category is designed to operate over standard Cat5e cabling, with typical maximum distances up to 100 meters. This aligns with Ethernet standards and supports common enterprise cabling practices. The HPE 1990-4640 Aruba Cat5e SFP category ensures reliable performance within these parameters, provided that cabling installations meet industry best practices.

By supporting widely used cabling types, this category reduces deployment complexity and avoids the need for specialized fiber infrastructure in environments where copper connectivity is sufficient.

Use Cases and Deployment Scenarios

The HPE 1990-4640 Aruba Cat5e SFP transceiver module category addresses a broad spectrum of deployment scenarios across enterprise, commercial, and institutional networks. One of the most common use cases is access layer connectivity, where switches connect end-user devices such as desktop computers, IP phones, and wireless access points.

In these environments, the ability to use existing copper cabling provides significant cost advantages. The Cat5e SFP category allows organizations to deploy modular switches while still accommodating copper-based endpoints, supporting gradual transitions to higher-speed or fiber-based technologies when needed.

Data Center Edge and Server Connectivity

Although data centers increasingly rely on high-speed fiber and DAC solutions, there remain scenarios where copper Gigabit Ethernet is appropriate. The HPE 1990-4640 Aruba Cat5e SFP category supports management networks, legacy systems, and low-bandwidth server connections at the data center edge.

This category allows data center operators to maintain compatibility with existing Ethernet-based equipment while integrating modular switching platforms. As a result, organizations can extend the useful life of legacy systems without compromising overall network architecture.

Compatibility and Interoperability Considerations

Compatibility is a defining strength of the HPE 1990-4640 Aruba Cat5e SFP transceiver module category. These modules are validated for use with specific Aruba and HPE switch models, ensuring predictable behavior and reliable performance. This validation process includes electrical testing, firmware integration, and long-term stability assessments.

Interoperability within multi-vendor environments is also an important consideration. While Aruba-qualified modules are optimized for Aruba platforms, adherence to industry standards allows them to function within broader Ethernet ecosystems. This makes the category suitable for networks that incorporate equipment from multiple vendors, provided compatibility guidelines are followed.

Thermal and Environmental Design

The compact SFP form factor presents unique thermal challenges, especially for copper-based transceivers that consume more power than optical counterparts. The HPE Aruba Cat5e SFP category incorporates efficient thermal design to dissipate heat effectively within supported switches. This helps maintain stable operation even in densely populated switch configurations.

Environmental resilience is also a consideration, with modules designed to operate within specified temperature and humidity ranges typical of enterprise data rooms and wiring closets.

Strategic Value of Cat5e SFP Modules in Network Planning

From a strategic perspective, the HPE 1990-4640 Aruba Cat5e SFP transceiver module category provides organizations with flexibility in network planning and investment protection. By enabling copper connectivity through modular interfaces, this category supports phased upgrades and mixed-technology environments.

Network planners can deploy switches with SFP ports and populate them with Cat5e modules where needed, reserving fiber transceivers for high-bandwidth or long-distance links. This approach maximizes the utility of switching hardware and allows networks to evolve in response to changing business requirements.

Positioning Within the Aruba Networking Ecosystem

The HPE 1990-4640 Aruba Cat5e SFP transceiver module category occupies an important position within the broader Aruba networking ecosystem. It complements Aruba switches, access points, and management solutions by providing a dependable copper connectivity option that aligns with Aruba’s design philosophy.

This category supports Aruba’s focus on secure, scalable, and manageable networks, ensuring that even copper-based connections meet enterprise expectations. By maintaining consistency across hardware components, Aruba enables organizations to build cohesive networks with predictable performance characteristics.