In the simcommander chassis/device manager when I click on the front right to fire the short pulse to that corner, it works like expected. However, @ the front left corner only the sound is being transmitted, with no firing of the buttkicker for that corner. I am plugged into the green/front channel of the sound card.
I've been using this buttkicker/amp/simvibe/simcommander combo for quite a few years, pretty much without flaw. I disconnected all the USB/Video/Sound/power etc.from the rear of the computer to in order to gain access to install a video card. Upon reassembly, this is the state.