
VGA, also known as D-Sub, has a 15-pin connector arranged in three rows of five pins each. This interface is the most common type on video cards and is present on the vast majority of models. It transmits red, green and blue analogue signals...
VGA, also known as D-Sub, has a 15-pin connector arranged in three rows of five pins each. This interface is the most common type on video cards and is present on the vast majority of models. It transmits red, green and blue analog signals along with synchronization signals (horizontal and vertical). When connecting devices via VGA, the cable length should ideally not exceed 10 meters. Make sure that the connectors are securely fastened, as loose connections may cause ghosting in the displayed image.
VGA supports 16 colors or 256 shades of gray at higher resolutions such as 640x480, while maintaining 256 colors at 320x240. Later updates increased the video memory to 1 MB, allowing support for higher resolutions such as SVGA (800x600) or XGA (1024x768). Subsequently, expanded resolutions appeared, including SXGA (1280x1024), SXGA+ (1400x1050), UXGA (1600x1200), WXGA (1280x768), WXGA+ (1440x900), WSXGA (1600x1024), WSXGA+ (1680x1050), WUXGA (1920x1200) and WQXGA (2560x1600). All of these VESA compliant resolution signals can be transmitted through the VGA interface.