[Elecraft] K2 - computer interface

[Poul Erik Karlshøj (PKA)]

I used to connect (using HRD) my K2 to a laptop having serial ports using the specially configured cable (K2 > ATU > computer). Worked just fine.
Quite a few years ago I got the K3 and connected the K3 (using HRD)  to a computer with no RS-232 ports using a Targus PA088E USB/RS-232 converter cable. Works fine and I kind of forgot about the K2.

Now, recently I decided to try to connect (using HRD) the K2 using this Targus USB converter and cannot get HRD to connect.
Should I be able to connect K2 to the computer (WIN7)? As stated it works just fine with the K3.

I think there should be a lot of (happy) K2 owners who can help me!

73/OZ4UN
Paul