ADD2 cards with DVI-D connectors only support digital output. Thus, analog monitors or CRT monitors with DVI-to-DB15 adapter are not supported with this output.
An analog monitor can be connected to an ADD2 card with a DVI-A or DVI-I connector or to the system's VGA connector. DVI-A connectors support analog output only while DVI-I connectors support analog and digital output.
This applies to: