Piedinature - Pinouts
Norton/PassMark Parallel Port Loopback

Used to verify that a port is working. This one works with Norton Utilities: Norton Diagnostics from Symantec. and with PassMark Software.
A 30day trial PassMark BurnInTest Pro can also be downloaded from http://www.passmark.com/ftp/bitpro.exe

25 PIN D-SUB MALE Connector.