3Com Hub manual Environmental Statements, End Of Life Statement, Regulated Materials Statement

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ENVIRONMENTAL STATEMENTS

It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to:

■Establishing environmental performance standards that comply with national legislation and regulations.

■Conserving energy, materials and natural resources in all operations.

■Reducing the waste generated by all operations.

■Ensuring that all waste conforms to recognized environmental standards.

■Maximizing the recyclable and reusable content of all products.

■Ensuring that all products can be recycled, reused and disposed of safely.

■Ensuring that all products are labelled according to recognized environmental standards.

■Improving our environmental record on a continual basis.

End Of Life Statement

3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally-friendly, and the inks are vegetable-based with a low heavy-metal content.

Environmental Statement about the Product Packaging

The packaging for this product is fully recyclable. It has a recycled (post consumer) waste content of at least 40% by weight, and no heavy-metal content.

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Contents OfficeConnect Dual Speed Hub 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Introduction Creating your Network Page Introduction Small Network With OfficeConnect HubCreating Your Network Dual Speed Hub 8-FrontPower Adapter socket Dual Speed Hub 8-RearTwisted Pair TP Cables Before You StartWorkstation Connections Hub ConnectionsStacking the Units Together Rubber FeetStacking Clip Positioning Your Hub Securing Your HubConnecting Workstations and Other Equipment to Your Hub Connecting Another OfficeConnect HubFast Ethernet 100Mbps Configuration Rules Ethernet 10Mbps Configuration Rules Example of an Ethernet 10Mbps NetworkMaking the Connection to Another Hub Checking Hub ConnectionsSpot Checks Problem Solving Straight-through Cable/Crossover Cable Networking Terminology Dimensions and Standards Dimensions and Operating ConditionsStandards Regulated Materials Statement Environmental StatementsEnd Of Life Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité Technical Support Online Technical Services3Com Knowledgebase Web Services World Wide Web SiteSupport from Your Network Supplier Support from 3ComEurope North America Returning Products for Repair Country Telephone Number Fax Number3Com Corporation Limited Warranty Warranties Exclusive Disclaimer Electromagnetic Compatibility Wall mounting screw hole guide 142mm 5.6in Part No. DUA 1675-0AAA03 Published June

Hub specifications

3Com Hub: A Cornerstone of Early Networking Technology

The 3Com Hub represents one of the pioneering devices in the realm of computer networking. Developed by 3Com Corporation in the late 1980s, it played a significant role in facilitating communication within local area networks (LANs). As an essential component during the rise of networked computing, the 3Com Hub laid the groundwork for the development of more advanced networking technologies that followed.

One of the main features of the 3Com Hub is its ability to connect multiple devices within a network in a straightforward manner. Operating primarily at the data link layer (Layer 2) of the OSI model, the hub allows for the interconnection of computers, printers, and other network devices using twisted-pair Ethernet cables. Typically available in 8, 16, or 24 ports, it offered scalability to organizations as they expanded their networks.

The hub operates using Ethernet technology, which was evolving rapidly at the time. It effectively transmitted data packets by broadcasting signals to all connected devices. While this method is simple and efficient for smaller networks, it also means that bandwidth is shared among all devices. This mechanism could lead to collisions when multiple devices attempted to send data simultaneously, a common limitation during the era of hubs.

In terms of characteristics, the 3Com Hub is a plug-and-play device, meaning it requires no complex configuration. This ease of installation was particularly advantageous for organizations that were just beginning to adopt networking technologies. The hub also supported a variety of Ethernet standards, including 10BASE-T and 100BASE-T, allowing for flexible implementation as network requirements evolved.

3Com hubs were designed with durability in mind, with a robust chassis that could withstand the rigors of office environments. They typically featured LED indicators for power and link status, providing users with immediate feedback about the operation of the network. Although modern networking has moved toward switches and routers that provide greater efficiency and intelligence, the 3Com Hub remains an iconic representation of early networking solutions.

In conclusion, the 3Com Hub played a vital role during the formative years of computer networking, providing the foundation for many of the technologies that dominate today’s networks. While it may seem primitive in the context of advanced networking options available today, its influence on the development of LAN technologies is undeniable. As organizations continue to navigate the evolution of networking, the legacy of the 3Com Hub endures.
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