Cascading hubs with cascade cables to make a stack is as simple as connecting the Up port of one hub to the Down port of another hub as illustrated below.

NMU

Stackable

Up

Down

Switch/

Transceiver

NMU

Stackable

Up

Down

Switch/

Transceiver

NMU

Stackable

Up

Down

Switch/

Transceiver

Cascade Ports

NOTE: To connect the cascade cable, the Up port on one hub connects to the Down port of another hub.

Constructing a Management Hub Stack

A stack can be constructed with up to six hubs in total. One master hub and up to five slave hubs can exist in one stack.

Position within the Stack

The master hub can be positioned anywhere in a stack and automatically assigns the ID of each hub according to its position in the stack.

Master Hub Role

The master is used to manage and configure other hubs in the stack and supplies the stack with additional ports (12/24) and an additional expan- sion module slot. The master hub can also be used as a stand-alone intelligent hub. Managing the hubs can be accomplished with the master hub’s versatile management capabilities, such as:

Mini Console Management

Refer to Chapter 3: Managing Through the Mini Console

18 10/100 Managed Hub

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Black Box LH8112A-S Constructing a Management Hub Stack, Position within the Stack, Master Hub Role, 18 10/100 Managed Hub

LH8112A, LH8112A-S, LH8124A specifications

The Black Box LH8112A, LH8124A, and LH8112A-S are advanced KVM (Keyboard, Video, Mouse) switch solutions designed for users who require seamless control over multiple computers or servers from a single console. These models are particularly beneficial in environments such as data centers, server farms, and high-performance computing operations where efficient management of multiple systems is essential.

One of the main features of these KVM switches is their ability to support multiple video resolutions, ensuring high-quality display output. The LH8112A and LH8112A-S models can handle video resolutions of up to 1920x1200 at 60Hz, providing sharp images and smooth performance for applications that require detailed visual fidelity. The LH8124A takes this a step further by supporting an even higher resolution, making it suitable for graphic-intensive tasks and multi-monitor setups.

The switches also come equipped with advanced switching technology, allowing users to quickly and effortlessly toggle between connected devices. Users can switch control using either the intuitive front panel buttons or keyboard hotkeys, enhancing user experience and productivity. This flexibility helps in reducing downtime and streamlining operations in busy environments.

In terms of connectivity, the Black Box LH8112A series supports both USB and PS/2 interfaces, accommodating a wide range of peripherals. This versatility ensures compatibility with various systems, including legacy devices and more modern hardware setups. Moreover, the KVM switches offer daisy-chaining capability, allowing users to expand their control setup and manage up to 256 computers using a single-console solution.

Security is another key consideration, and these models include features like password protection and user access controls, ensuring that only authorized personnel can switch between systems. Additionally, the devices are designed for high reliability, featuring a rugged construction that minimizes downtime and maximizes operational efficiency.

In summary, the Black Box LH8112A, LH8124A, and LH8112A-S KVM switches are powerful tools for anyone needing to manage multiple computers effectively. With high-resolution video support, versatile connectivity, user-friendly operation, and secure access features, these switches are indispensable for enhancing productivity and ensuring seamless management of IT resources.