User Manual

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Adjusting the Serial Port DIP Switch
The UC-5100 computers come with a DIP switch for users to adjust the
pull-up/pull-down resistors for the serial port parameters. The serial
port DIP switch is located on the bottom panel of the computer.
Adjust the setting as required. The ON setting corresponds to 1KΩ and
the OFF setting corresponds to 150KΩ. The default setting is OFF.
Each port consists of 4 pins; you must switch all 4 pins of a port
simultaneously to adjust the value of the port.