[Elecraft] K3 & MacLoggerDX connection

[Hunsdon Cary III]

A big "Thank You" to the dozen or so who responded to my question about logging program recommendations for a MacBook; very much appreciated!
I purchased MacLoggerDX yesterday and now am pondering how to connect the MacBook to the computer.  I think I need an RS-232 to USB cable, is that correct?
73,
Cary, K4TM
K3-100 #3449

H. Cary III, K4TM
h3cary at gmail.com