Lightwave Communications

USB SERVERSWITCH

2.0USB ServerSwitch - System Information

2.1Video

The USB ServerSwitch incorporates an active, high-bandwidth switch for graphics adapter cards supporting resolutions up to 1600 x 1200 pixels. The system supports DDC2B video records, and maintains a local copy of the video record for each attached server (after a proper power-up sequence). A constant impedance of 75 ohms is maintained on all video lines in the USBSS, so that the video signal is not compromised by mismatched impedance. Monitor sense lines are also transported by the USB ServerSwitch. The ID lines are buffered and passed from the monitor to the attached graphics adapters in the servers.

Note: The USB ServerSwitch's USB interface is for discrete USB mice and keyboards only, and will not support Monitors with USB-provided video controls.

DDC2B Support

The DDC2B video record is generated during the power-up of the system, and is generated by each server that supports or requires the video record, or else defaults to a generic VGA mode. The USBSS stores a copy of the DDC2B record at each Server port, and when that server is switched to the User, that video record information will be sent to the monitor for a proper video signal.

The video record is determined upon power-up of the system by checking the video signal with the monitor connected to the User A port, and then the User B port. If monitors are changed at a later date, it may be necessary to shut down the USB ServerSwitch and/or the servers to regenerate the proper DDC2B record.

If using DDC2B, it is recommended that both User A and User B have similar video monitors at their stations, since the DDC2B only supports one video record per server.

2.2 Keyboard / Mouse

The USB ServerSwitch is an intelligent USB switch for the keyboard and mouse. Each port emulates the keyboard and mouse fully, allowing an attached server or PC to boot without having been previously selected. Power for each connected device is monitored from the USB port.

Note: The USB ServerSwitch's keyboard and mouse interface is for discrete USB mice and keyboards. It does not support graphics tablets, scanners, modems, drives, hubs or other composite USB devices. Each USB-A receptacle on the USBSS will support one USB mouse or USB keyboard.

If there is no connection on a USB server port, a status message "Inactive port" will be displayed on the front panel display. The other attached servers are not affected because of the keyboard and mouse emulation.

Each port maintains a local copy of the keyboard and mouse configuration. USB Port numeration is maintained even when the user has de-selected a port. When

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December 2001

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Lightwave Communications USB SuperSwitch manual USB ServerSwitch System Information, Video, Keyboard / Mouse, DDC2B Support
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USB SuperSwitch specifications

Lightwave Communications has made a significant advancement in signal management with its innovative USB SuperSwitch, designed for seamless integration and efficiency in various digital environments. The USB SuperSwitch stands out as a versatile tool that allows users to manage multiple USB devices from a single point, enhancing the functionality and convenience of USB connectivity.

One of the main features of the USB SuperSwitch is its ability to support multiple USB connections simultaneously. The device typically allows users to switch between several USB inputs, making it ideal for situations where multiple computers or devices need access to the same peripherals, such as printers, scanners, or external storage. This capability streamlines workflows, reducing the need to constantly plug and unplug devices, which can lead to wear and tear over time.

The USB SuperSwitch employs advanced USB technology, ensuring compatibility with a wide range of devices, including USB 2.0 and USB 3.0 standards. Its high-speed data throughput ensures that users can transfer files and access devices without noticeable lag, making it suitable for both professional and personal use. The SuperSwitch is designed to handle data-intensive tasks, which is critical in environments where efficiency and speed are paramount.

An essential characteristic of the USB SuperSwitch is its user-friendly interface. It typically features a straightforward button switch or a remote control, allowing users to effortlessly toggle between connected devices. This design caters to both tech-savvy individuals and those less familiar with technology, ensuring that everyone can benefit from its capabilities.

Moreover, the USB SuperSwitch's compact and portable design makes it an excellent choice for both home and office settings. It can easily fit into any workspace without taking up significant space, which is a crucial consideration in today's often crowded environments. The device's durability and robust construction further enhance its appeal, ensuring that it can withstand regular use.

In addition, the USB SuperSwitch often includes features such as LED indicators that provide real-time feedback on which device is currently active, enhancing user experience and minimizing confusion. The device's plug-and-play functionality eliminates the need for complex software installations, allowing users to start using it right out of the box.

In conclusion, Lightwave Communications' USB SuperSwitch is a powerful, user-friendly solution for managing USB connections, making it a valuable addition to any tech setup. Its main features, advanced technologies, and practicality make it an ideal choice for anyone looking to optimize their USB device management.
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