Pin:  U343.IN1  in
  Pin:  U713.INP  out
  Pin:  U714.QN


##</code><code>##

/^[ ]+Pin:[ ]*([^\.]*)\.([^ ]*)$/  
--> Matches "  Pin:  U714.QN"
$1 = U714
$2 = QN

and

/^[ ]+Pin:[ ]*([^\.]*)\.([^ ]*)[ ]out/ 
--> Matches "  Pin:  U713.INP out"
$1 = U713
$2 = INP



##</code><code>##

^[ ]+Pin:[ ]*([^\.]*)\.([^ ]*)$|^[ ]+Pin:[ ]*([^\.]*)\.([^ ]*)[ ]out

##</code><code>##

  Pin:  U713.INP"endofstring or out"
With $1 = U713
$2 = INP