| http://www.w3.org/ns/prov#value | - One way to test a serial port is to use a Port And Peripheral Electronic Reactive Communications Link Interface Probe - otherwise known as a paperclip, bend it so it can be inserted in positions 2 and 3 of a female serial port connector, this provides a loopback circuit that should echo back any characters sent to the com port (it relies on the serial drivers not being fussy about other data lines
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