This feature enables the NDIO ( Niagara Direct Input Output) driver, required to configure and use the JACE controller's Ndio-type I/O modules. Not all JACE controllers support such I/O modules (which attach/chain directly to the controller, using 20-pin connectors); refer to specific JACE controller data sheets to confirm whether this is an available option. Note that in the ndio features line (below), a “device” equates to an “Ndio Board”, and that history and schedule limits have no practical application.