3Com Hub manual Stacking the Units Together, Rubber Feet, Stacking Clip

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Stacking the Units Together

The Rubber Feet

The four self-adhesive rubber feet prevent your hub from moving around on your desk. Only stick the feet to the marked areas at each corner of the underside of your hub if you intend to place the unit directly on top of the desk. Do not fix the feet if you are going to use the clip.

The Stacking Clip

The blue stacking clip allows you to stack your OfficeConnect units together neatly and securely.

CAUTION: You can stack up to a maximum of four units. Smaller units must be stacked above larger units.

To fit the clip:

1Place your unit on a flat surface.

2Fit the clip across the top of the unit, as shown in Figure 2 (picture 1), ensuring that the longer sections of the fastening pieces are pointing downwards.

3Align the fastening pieces over the slots found on each side of the unit.

4Push the clip down gently to secure it, ensuring the fastening pieces snap into the slots on the unit.

To fit another unit:

1Rest the second unit on top of the clip and align it with the front of the unit below.

2Press down gently on the unit to secure it onto the clip, ensuring the fastening pieces fit into the slots on the unit below, as shown in Figure 2 (picture 2).

Figure 2 Stacking Your Units Together

1

Fastening

2

 

 

 

Piece

 

 

 

Fastening

 

 

Piece

To remove the clip:

1Remove the top unit together with the clip. If you hook a finger around one of the the fastening pieces and then pull it gently from out of the slot, the clip should come away with the upper unit attached to it.

2Push the clip in the center, so it bends towards the base of the unit, and then separate once the clip is loose.

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Contents OfficeConnect Dual Speed Hub 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Introduction Creating your Network Page Small Network With OfficeConnect Hub IntroductionDual Speed Hub 8-Front Creating Your NetworkDual Speed Hub 8-Rear Power Adapter socketWorkstation Connections Before You StartTwisted Pair TP Cables Hub ConnectionsStacking the Units Together Rubber FeetStacking Clip Securing Your Hub Positioning Your HubConnecting Workstations and Other Equipment to Your Hub Connecting Another OfficeConnect HubFast Ethernet 100Mbps Configuration Rules Example of an Ethernet 10Mbps Network Ethernet 10Mbps Configuration RulesMaking 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 End Of Life Statement Environmental StatementsRegulated Materials Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité 3Com Knowledgebase Web Services Online Technical ServicesTechnical Support World Wide Web SiteSupport from 3Com Support from Your Network SupplierEurope North America Country Telephone Number Fax Number Returning Products for Repair3Com 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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