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The A-B box is an analog switch box used to CONNECT multiple peripherals to one computer. The pictures are examples of the front and back of an A-B box. The back of the A-B box has an INPUT-OUTPUT port, and A and B ports to connect each of the DEVICES. In our example, two parallel port printers connect to the box on the A and B ports and the computer connects to the INPUT-OUTPUT port. The computer user could then switch between the A and B printer on the same computer without having to disconnect and reconnect the printers to the computer.
NoteWhen purchasing an A-B box for a computer printer, we recommend contacting the printer MANUFACTURER first to confirm USING such a device does not void your WARRANTY.
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