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3. Connect to a RS-232 port for more RS-485 devices
The SER-4485-SI-M can convert RS-232 to RS-485 interfaces for extension to more
highly reliable RS-485 interfaces.
4. Connect to existing RS-485 bus for more RS-485 devices
The SER-4485-SI-M can connect to existing RS-485 bus for extension to more highly
reliable RS-485 interfaces, and as many as 128 RS-485 hubs are supported on each RS-
485 bus.