This card is connected to the Outputs Bus of the Master Card. A maximum of two Outputs Cards can be daisy chained to this bus. One flat cable connector on this card connects to the Outputs Bus on the Master Card, the other flat cable connector is used to connect to the leds.
Each Outputs Card can control 32 leds with the possibility of dimming. This possibility is not present in the standard Output Connection Board. This however has 38 outputs that can be controlled.
I do not use an Outputs card.