10. Is the computer and computer IO port (1) cable plugged into the correct interface on the back of the computer? 1 Some ports are labeled COM or SER, these are the correct interfaces. 2 If the interface is not marked, the COM or serial port is a male plug (the plug has an exposed pin and the female plug is a socket). Note: If the plug cannot be plugged into the correct COM or the correct serial port, a male and female plug converter may be required. (2) Is the interface active?
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