Master card.
It controls 72 digital inputs and 45 (38+7) digital outputs.
It has a bus to connect up to four displays cards.
It's connected to the USB Expansion with extension parallel cable (Pin1 to Pin1).
All required components to assembly the card are included.
* Cards not assembled and tested by us, aren't cover by the warranty nor technical support.
You can see a very good review about this card through Ray's Aviation.
Master card (kit)
Ref: 1T1
Master card (kit)