I've got my pedalboard connected to the PC via an external Midi to USB/Thru box that shows as "USB Midi 4i4o" in all applications. The pedalboard is a Studiologic one (it's main use is to play electronic organ music/Hammond/Theatre Organ style). It works basically with every application, but it struggles to keep a connection with OrganTeq, playing for some notes before dropping out. Only way to fix it is to unplug the USB cable from the PC and plug it again. Then, it might work or not for more than a couple of notes, and the procedure has to be repeated. Was playing for hours yesterday, but today no luck so far with the pedalboard. In Hauptwerk it does work.