C.A. Designs mouse cross-point switches are part of an expandable modular system, routing the pointing device inputs of multiple computers to any of several workstations.  The system is primarily designed to work in parallel with an existing keyboard or video switch and is controllable from the same serial data stream.

Maximum size is limited to 128 mice on 64 computer ports, but systems may be connected in parallel to exceed this limit.

Each unit is constructed in a mains-powered 3U EuroRack housing.  Several modules may be configured to make an optimum-sized switch.

Each computer mouse port attached to this system must connect to a signal bus via an adapter card.  This may be caused to communicate with a selected 'real' mouse (via a switch) and also continuously emulates a mouse to the host.  This is essential so that the connected computer is able to 'boot', load mouse drivers, run Microsoft Windows, etc.

MS1D cards enable 4 serial mouse ports to interface with the mouse switch bus.

Cross-point switching cards are available in two sizes:

• MS1A switches 4 mice to a 16-way bus
• MS2A switches 4 mice to a 64-way bus

Each card has a switch-selectable address and a microcontroller 'listening' to the control bus.  The four mouse inputs to each card are in RS422 format to enable long cable runs; therefore, each mouse must have a local interface to convert it's data format.

The local mouse interface may be a stand-alone box (no additional PSU required) type M3A, or it may be an ISA bus card type SMP1A with an additional switch to changeover between the main mouse switch and a local PC application.

Control of the switch is implemented through a serial port attached via a bus termination card RI3A.

Each rack module requires an associated connector module in the RK3U-C cardframe.

Each rack requires a mains power supply type MP3R-C.

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