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Serial Port Loopback (25)

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

25 PIN D-SUB FEMALE (To Computer).

25 PIN D-SUB FEMALE to Computer. 

Name Pin Pin Pin Pin
Jumpering 1 2 3
Jumpering 2 4 5
Jumpering 3 6 8 20 22

 Contributor: Joakim Ögren

Source: ?
Please send any comments to Joakim Ögren.