nx slotWhat is SLOT NX? By simply attaching an option board to the slot, you can build a flexible system with a wide variety of interfaces such as DisplayPort™, 12G-SDI, HDMI and DVI-D.What NX is actually missing is a 'Slotted Hole'. That being said, go to the 'Reuse Library' tab in the Resource Bar and select the '2D Section Library' item and then the folder