If your NVIDIA based graphics card features two video out connectors (ie VGA + DVI), it does not necessarily mean that it will support dual monitors at the same time. The DVI-D cable will read only the digital signal from the DVI-I connector on the graphics card and ignore the analog signal. NVIDIA based graphics cards which carry a DVI-I connector are fully compatible with flat panel LCD monitors which typically have DVI-D cables. The extra pins on a DVI-I connector carry the analog signal which the DVI-D connector does not have. The graphics card shown in Figure 1 which shows a DVI-I connector contains more pins than the DVI-D connector shown in Figure 2. There are currently two prominent types of DVI connectors, DVI-I ( Figure 1) and DVI-D ( Figure 2).Ī DVI-D connector on a graphics card sends out a digital signal only, while a DVI-I connector can send out a digital signal (for digital displays such as flat panel LCD monitors) as well as analog signal (for older displays such as a CRT monitor) using a DVI to VGA adaptor shown below. For every graphics card that features a DVI connector, the number of pins and layout of the pins on the DVI connector will vary depending on what type of DVI connector is found on the graphics card. A DVI connector is characteristically colored white (as opposed to a VGA connector which is colored blue). Most current NVIDIA based graphics cards feature a Digital Video Interface (DVI) connector for connecting a digital flat panel LCD monitor or projector to the card.
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