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QuStream's Serial Port Expander allows users to expand their RS-232 capabilities above those provided by the basic 3500PRO or 3500PRO-LE controller. Based on QuStream’s GPN (General Purpose Node) chassis, the Serial Port Expander works as a multiplexer to handle messages sent from users to the controller. Internally, the Serial Port Expander software application runs under the Linux O/S and can be user configured to assign port connections. Up to seven RS232 ports can be connected as either 1x7 or 2x3 configurations using QuStream’s CPU-link open control interface protocol. |