Sony VGN-AR170GU1 - Manual (Page 102)

102 n N
Using Peripheral Devices
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DVI-D stands for Digital Visual Interface - Digital. It is a type of DVI connector that supports only digital video signals (no analog video signals). It has
24 pins.
A DVI-I connector (Digital Visual Interface - Integrated) supports digital video and analog video signals. It has 29 pins.