[Elecraft] K2 & PSK31

[John Chance-Read]

Thanks to every one who responded to my last request.
I note many are using K3 for PSK 31 but I've got a K2 so I guess for K2 owners this is all history
I shall stick with CW Skimmer for morse and probably DigiPan for PSK31.  
I have a suitable computer 
K2 owner that have used these combinations and can advise me as to any particular interface between the two would be appreciated.
Does one simply use the data mode on the K2 ?
John G4BOU