The ATI Rage 128 Pro AGP video card provides a DVI and VGA video connector. The DVI connector follows the DVI-D standard and supports only digital displays. Customers needing to connect standard VGA displays can use the 15 pin VGA connector.
The DVI standard allows manufacturers to incorporate VGA signals into the DVI port. This variation of DVI is called DVI-I. The DVI-D and DVI-I connectors appear identical except for a single connector 'key'. The key on DVI-I connectors forms a plus (+) sign, while on DVI-D connectors it forms a minus (-) sign.
The ATI Rage 128 Pro card supports one display at a time. The DVI and VGA ports cannot be used simultaneously.