Dreamcast VGA
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A first and third party peripheral for the Sega Dreamcast, the VGA adapter allowed the Dreamcast to be connected to a computer monitor. In this way the Dreamcast could achieve the benefit of running games at 480p, allowing it to compete with its competitors, the Sony PlayStation 2, Microsoft XBOX and Nintendo GameCube, in terms of progressive scan video output. There were a variety of third party versions made, which were essentially identical in functionality to Sega's model. Some third party adapter were known to have problems when it came to the case, for example the monitor cord would not fit in the VGA slot since there was too much surrounding plastic. Other problems included the visual quality. Dreamcast adapters are cheaper because the connector is a VGA to AV cable, making a VGA signal output natural, while other consoles did not have the direct signal to use and instead used RGB cables. Although these problems have been easily fixed by future consoles on VGA compatible high definition televisions, no other flaws were reported.
Although the accessory was produced in great quantity an official VGA box can go for around $50US on eBay, while third party boxes are often sold for under $20US on eBay and other websites.
Most official American Dreamcast releases were compatible with a VGA box. There are a handful of games that did not include necessary code to use VGA mode. Many of the later SNK ports are good examples of this (eg. Garou: Mark of the Wolves).
Workarounds exist to trick all but a handful of games into working with a VGA adapter (like the software DC-X).
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