The additional connection cables are handy if you've already got a
Triggertrap product (like a Triggertrap Mobile Dongle or a Triggertrap
Ada), and you want to use it with a new camera, all you have to do is to
buy the correct connection cable.
The Triggertrap CB1 connection cable is suitable for Olympus E-1, E-10,
E-100 RS, E-20, E-3 and E-5.