A VGA (Video Graphics Array) cable is used to transfer video signals between a computer and a display device. It is a 15-pin connector that is commonly used on PCs, laptops, computer monitors, projectors, and high-definition television sets. VGA cables carry analog RGBHV (red, green, blue, horizontal sync, vertical sync) video signals and can support a variety of VGA resolutions, ranging from 320×400px @70 Hz to 2048×1536px (QXGA) @85 Hz. Here are some common uses of VGA cables:

• Connecting a computer to a monitor or projector
• Playing games from an older computer on a larger display
• Connecting a computer to an older display

VGA cables are not designed to be "hot-pluggable," which means that you cannot connect or disconnect your devices while your computer is running. It is also easy to damage the pins, and surges could cause damage to the hardware on your computer. VGA extenders are electronic devices that increase the signal strength from a VGA port, often used in schools, businesses, and homes when multiple monitors are being run off one VGA port, or if the cable between the monitor and the computer is too short.