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Serial port Loopback (9 Norton)

pinout

Used to verify that a port is working. This one works with Norton Utilities: Norton Diagnostics from Symantec.

9 pin D-SUB female
9 pin D-SUB female connector  to the computer
Name Pin Pin Pin Pin
Jumpering 123  
Jumpering 278  
Jumpering 31469

Source:www.pinouts.ru

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