I'm having trouble with the I/O plug in Logic. My interface is a Focusrite Saffire Pro 40 with Mix Control. My plan was to run a track into an ART Voice Channel out of the output from the Pro 40 into the ART and then back into Pro 40. I was trying to use the I/O plug in with no results. After a looking at a few YouTube videos I watched one guy do what I wanted to do but only he was using Logic 9 but he was using a Pro 40 BUT he was using the Mix Control to route the signal. Every other video I have seen on re-amping or running hardware into your DAW using the Pro 40 (or any other Focusrite Saffire product) never mention this. Only that one So, I go back to the recording room and proceeded to: -came out of output 3 of the Pro 40 into the ART -came out of the out on the ART into input 3 -set output 3 on the Mix Control to DAW 3 -created a new audio track -and everything worked So what is up with the I/O plug in?